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While some of these manifestations occur in isolation&#44; others form part of complex paraneoplastic syndromes&#46; In both cases&#44; however&#44; they can indicate the presence of an underlying neoplasm&#46;<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1&#8211;7</span></a></p><p id="par0020" class="elsevierStylePara elsevierViewall">In the second part of this review&#44; we will continue with our analysis of cutaneous signs and symptoms that can lead to a diagnosis of an underlying malignancy irrespective of whether or not they form part of a paraneoplastic syndrome&#46; We look at a wide range of conditions&#44; some of which are considered classic paraneoplastic syndromes &#40;marked with an asterisk &#91;&#42;&#93;&#41; and others that correspond to a diverse group of skin conditions frequently seen in routine practice&#46; While this second group of conditions do not normally indicate malignancy&#44; in certain situations and with certain features&#44; they can alert the dermatologist to the presence of an underlying tumor&#46; In all cases&#44; a high index of clinical suspicion is required&#46; In such cases&#44; the dermatologist will be responsible for ordering additional tests&#44; if warranted&#44; and for monitoring the patient&#46; This is particularly important in conditions that are not commonly associated with malignancy or that are associated with a higher risk of certain tumors&#46; We have used 2 asterisks &#40;&#42;&#42;&#41; to denote conditions that are occasionally associated with an internal malignancy and 3 asterisks &#40;&#42;&#42;&#42;&#41; to denote those that are only rarely associated &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0025" class="elsevierStylePara elsevierViewall">The signs and symptoms are classified according to clinical morphologic criteria and listed in random order &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46; The first lesions dealt with in the second part of this review are erosive and bullous lesions&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">Erosive and Bullous Lesions</span><p id="par0030" class="elsevierStylePara elsevierViewall">The presence of erosions and blisters on the skin and mucous membranes can indicate the presence of conditions such as lichen planus&#44; erythema multiforme exudativum&#44; and autoimmune bullous disorders&#46; These erosive and bullous lesions can sometimes coexist in certain conditions &#40;e&#46;g&#46;&#44; paraneoplastic pemphigus<a class="elsevierStyleCrossRefs" href="#bib0040"><span class="elsevierStyleSup">8&#44;9</span></a>&#41; in association with an underlying malignancy&#44; affecting both children<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">10</span></a> and adults &#40;<a class="elsevierStyleCrossRef" href="#tbl0010">Table 2</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0010"></elsevierMultimedia><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Paraneoplastic Pemphigus &#40;<span class="elsevierStyleSup">&#42;</span>&#41;</span><p id="par0035" class="elsevierStylePara elsevierViewall">Paraneoplastic pemphigus has certain features that distinguish it from pemphigus vulgaris&#44; namely&#44; persistent severe&#44; painful stomatitis&#59; involvement of other mucosa&#59; and&#44; in certain cases&#44; the presence of polymorphous&#44; vesicular&#44; lichenoid skin eruptions that sometimes mimic the lesions seen in erythema multiforme exudativum&#44; toxic epidermal necrolysis&#44; erythroderma&#44; or lichen planus&#46; Acral lesions affecting the palms and soles and paronychia are common in paraneoplastic pemphigus but rarely observed in pemphigus vulgaris &#40;<a class="elsevierStyleCrossRefs" href="#fig0005">Figs&#46; 1 and 2</a>&#41;&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0040" class="elsevierStylePara elsevierViewall">Histologic examination of skin biopsy specimens from patients with paraneoplastic pemphigus shows interface dermatitis&#44; vacuolization of the basement membrane&#44; necrotic keratinocytes&#44; suprabasal clefting&#44; and acantholysis&#46; The lichenoid inflammatory infiltrate may also be more predominant than in pemphigus vulgaris&#46; Direct immunofluorescence testing reveals immunoglobulin &#40;Ig&#41; G and C3 deposits in intercellular epidermal spaces and at the dermal-epidermal junction&#44; but negative results are also a characteristic feature of paraneoplastic pemphigus&#46;<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">11</span></a> Circulating antiplatelet antibodies are detected in peripheral blood&#46;</p><p id="par0045" class="elsevierStylePara elsevierViewall">In two-thirds of cases&#44; the underlying neoplasm is diagnosed before the onset of pemphigus&#46; The most commonly associated malignancies are non-Hodgkin lymphoma&#44; chronic lymphoid leukemia&#44; and Castleman disease &#40;which is more common in children&#41;&#46; Less common malignancies are thymoma&#44; Waldenstr&#246;m macroglobulinemia&#44; lung adenocarcinoma&#44; follicular lymphoma&#44; retroperitoneal liposarcoma&#44; and on occasions&#44; hepatocellular carcinoma&#46;<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">12</span></a></p><p id="par0050" class="elsevierStylePara elsevierViewall">In the remaining one-third of cases&#44; 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occurs in elderly patients at a rate that would be expected for this age group&#46; However&#44; there have been reports of cases refractory to conventional treatment in patients with cancer&#46;</p></li><li class="elsevierStyleListItem" id="lsti0010"><span class="elsevierStyleLabel">2&#46;</span><p id="par0065" class="elsevierStylePara elsevierViewall">Cicatricial pemphigoid &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; has been classified as paraneoplastic in certain cases of antiepiligrin cicatricial pemphigoid&#46;</p></li><li class="elsevierStyleListItem" id="lsti0015"><span class="elsevierStyleLabel">3&#46;</span><p id="par0070" class="elsevierStylePara elsevierViewall">Patients with celiac disease and dermatitis herpetiforme &#40;&#42;&#42;&#42;&#41;&#44; a blistering disease frequently associated with gluten enteropathy&#44; can develop intestinal lymphoma&#46;</p></li><li class="elsevierStyleListItem" id="lsti0020"><span class="elsevierStyleLabel">4&#46;</span><p id="par0075" class="elsevierStylePara elsevierViewall">Linear IgA bullous dermatosis &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; has been described in association with lymphoproliferative diseases and renal cell carcinoma&#46;<a class="elsevierStyleCrossRefs" href="#bib0075"><span class="elsevierStyleSup">15&#8211;17</span></a></p></li><li class="elsevierStyleListItem" id="lsti0025"><span class="elsevierStyleLabel">5&#46;</span><p id="par0080" class="elsevierStylePara elsevierViewall">A diagnosis of epidermolysis bullosa acquisita &#40;&#42;&#42;&#42;&#41;&#44; which is characterized by antibodies to type VII collagen&#44; may indicate the presence of a lymphoreticular or other tumor&#46;<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">18</span></a></p></li><li class="elsevierStyleListItem" id="lsti0030"><span class="elsevierStyleLabel">6&#46;</span><p id="par0085" class="elsevierStylePara elsevierViewall">There has been an anecdotal report of pemphigus foliaceus &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; associated with non-Hodgkin lymphoma that responded to treatment with rituximab&#46;<a class="elsevierStyleCrossRef" href="#bib0095"><span class="elsevierStyleSup">19</span></a></p></li><li class="elsevierStyleListItem" id="lsti0035"><span class="elsevierStyleLabel">7&#46;</span><p id="par0090" class="elsevierStylePara elsevierViewall">Persistent&#44; atypical erythema multiforme exudativum &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; has been associated with renal cell carcinoma&#44; gastric adenocarcinoma&#44; and extrahepatic cholangiocarcinoma&#46;<a class="elsevierStyleCrossRef" href="#bib0100"><span class="elsevierStyleSup">20</span></a></p></li></ul></p></span></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">Skin Disorders With Inflammatory Papules and Nodules</span><p id="par0095" class="elsevierStylePara elsevierViewall">In this section&#44; we will look at skin disorders that are predominantly characterized by the presence of papules&#44; plaques&#44; and nodules occasionally accompanied by inflammation&#46; Some of these conditions&#44; for instance&#44; necrobiotic xanthogranuloma&#44; multicentric reticulohistiocytosis&#44; and Sweet syndrome&#44; are strongly associated with underlying neoplasms&#46; Others&#44; however&#44; such as erythema nodosum and cutaneous sarcoidosis&#44; are more weakly associated<a class="elsevierStyleCrossRefs" href="#bib0105"><span class="elsevierStyleSup">21&#44;22</span></a> &#40;<a class="elsevierStyleCrossRef" href="#tbl0015">Table 3</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0015"></elsevierMultimedia><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Necrobiotic Xanthogranuloma &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0100" class="elsevierStylePara elsevierViewall">Necrobiotic xanthogranuloma is characterized by multiple yellowish plaques and subcutaneous nodules located in the periorbital region and on the head&#44; the neck&#44; the flexures of the extremities&#44; and the trunk&#46; Ulceration and scarring are common&#46; The condition is associated with benign monoclonal gammopathy in 80&#37; of cases&#46; Associated malignancies include lymphoproliferative diseases&#44; myeloma&#44; chronic lymphoid leukemia&#44; and Hodgkin and non-Hodgkin lymphoma&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;23</span></a></p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Multicentric Reticulohistiocytosis &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0105" class="elsevierStylePara elsevierViewall">Multicentric reticulohistiocytosis starts with skin-colored&#44; pink&#44; or brownish papules measuring between a few millimeters and 2<span class="elsevierStyleHsp" style=""></span>cm in diameter located on the dorsum of the fingers&#44; around the nailfold&#46; They have a characteristic coral-bead appearance&#46; The lesions can subsequently spread to other sites&#44; such as the periorbital region&#44; the elbows&#44; the knees&#44; the feet&#44; and the shoulders&#46; Histologic findings include a histiocytic infiltrate with multinucleated giant cells with an eosinophilic cytoplasm and a ground-glass appearance&#46; Patients also develop destructive symmetric arthritis of the hands and knees&#46; Between 20&#37; and 25&#37; of patients have an associated hematologicl malignancy or breast&#44; stomach&#44; ovarian&#44; or cervical cancer&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;23&#8211;26</span></a></p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0055">Sweet Syndrome or Acute Febrile Neutrophilic Dermatosis &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0110" class="elsevierStylePara elsevierViewall">Sweet syndrome is characterized by the sudden onset of asymmetric skin lesions on the face&#44; the extremities&#44; and the upper part of the trunk&#46; The lesions include multiple erythematous or violaceous papules&#44; indurated plaques&#44; and painful inflammatory nodules that are typically accompanied by fever&#44; neutrophilia&#44; and systemic alterations</p><p id="par0115" class="elsevierStylePara elsevierViewall">Skin biopsy shows a dense neutrophilic infiltrate in the papillary dermis&#44; with a variable degree of edema and absence of vasculitis&#46;</p><p id="par0120" class="elsevierStylePara elsevierViewall">Between 10&#37; and 40&#37; of patients with Sweet syndrome have an associated malignancy&#44; which can precede or arise at the same time as the skin lesions&#46; The most common malignancies are acute myeloid leukemia and other hematological disorders&#46; Solid tumors &#40;genitourinary&#44; breast&#44; lung&#44; and gastrointestinal cancer&#41; are less common&#46; Sweet syndrome is not necessarily associated with malignancy&#44; as it may be idiopathic or induced by other factors such as infectious agents or drugs&#46; There are&#44; however&#44; certain groups of patients in whom it is necessary to rule out an underlying neoplasm&#46; Examples are elderly patients and children without leukocytosis or neutrophilia but with concomitant anemia and thrombopenia&#59; these patients are generally afebrile and have painful lesions on the head&#44; the neck&#44; and the arms&#59; these lesions often take the form of vesicles&#44; pustules&#44; blood-filled blisters&#44; or ulcers&#44; and tend to affect the mucous membranes &#40;<a class="elsevierStyleCrossRef" href="#fig0015">Figs&#46; 3 and 4</a>&#41;&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;27&#8211;31</span></a></p><elsevierMultimedia ident="fig0015"></elsevierMultimedia><p id="par0125" class="elsevierStylePara elsevierViewall">It has been suggested that pyoderma gangrenosum and Sweet syndrome may be part of the same spectrum&#46; In fact&#44; atypical pyoderma gangrenosum &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; which is an ulcerative neutrophilic dermatosis&#44; is more closely associated with hematological malignancies similar to those seen in Sweet syndrome than classical pyoderma gangrenosum&#46; It is characterized by superficial bullous lesions that form ulcers and are typically located on the head and neck&#44; although they can affect other parts of the body &#40;<a class="elsevierStyleCrossRef" href="#fig0020">Figs&#46; 4 and 5</a>&#41;&#46;<a class="elsevierStyleCrossRefs" href="#bib0010"><span class="elsevierStyleSup">2&#44;3&#44;21&#44;29</span></a></p><elsevierMultimedia ident="fig0020"></elsevierMultimedia></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0060">Cutaneous Sarcoidosis &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41;</span><p id="par0130" class="elsevierStylePara elsevierViewall">Cutaneous sarcoidosis has a wide clinical spectrum that includes papules&#44; plaques&#44; nodules&#44; lupus pernio&#44; scar induration&#44; ulceration&#44; alopecia&#44; hypopigmentation&#44; lichenoid or psoriasiform lesions&#44; and more rarely&#44; nail dystrophy or ichthyosiform lesions&#46; Its association with malignancy is attributed to an immune imbalance&#46; The most common associated malignancies are hematological disorders&#44; but a wide variety of solid tumors have also been reported&#46;<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">22</span></a></p><p id="par0135" class="elsevierStylePara elsevierViewall">On rarer occasions&#44; other inflammatory lesions such as erythema nodosum &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; may indicate the presence of Hodgkin lymphoma&#46; These lesions are atypical as they last between 1 and 5 months and do not respond to conventional treatment&#46;<a class="elsevierStyleCrossRef" href="#bib0160"><span class="elsevierStyleSup">32</span></a></p></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Necrotizing Panniculitis or Subcutaneous Fat Necrosis&#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0140" class="elsevierStylePara elsevierViewall">Necrotizing panniculitis&#44; also known as pancreatic panniculitis as it occurs in pancreatic disorders &#40;including cancer of the pancreas&#41;&#44; is caused by the excessive production of pancreatic lipase&#44; an enzyme that induces fat necrosis&#46; It is clinically characterized by the presence of painful erythematous plaques on the buttocks and pretibial regions&#44; although the trunk and the upper limbs may also be affected&#46; The lesions ulcerate&#44; acquiring an abscess-like appearance&#44; and discharge a brownish substance resulting from the liquefaction of subcutaneous fat&#46; Other symptoms&#44; such as fever&#44; arthralgia&#44; and eosinophilia&#44; are also occasionally observed&#46; Patients with necrotizing panniculitis should be evaluated for the presence of acinar cell carcinoma of the pancreas&#46;<a class="elsevierStyleCrossRef" href="#bib0165"><span class="elsevierStyleSup">33</span></a></p></span></span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Xerosis&#44; Ichthyosis&#44; Exfoliative Dermatitis &#40;Erythroderma&#41;</span><p id="par0145" class="elsevierStylePara elsevierViewall">Xerosis is a common sign that can be constitutional or form part of atopic dermatitis&#46; It may occasionally indicate the presence of an underlying malignancy &#40;<a class="elsevierStyleCrossRef" href="#tbl0020">Table 4</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0020"></elsevierMultimedia><p id="par0150" class="elsevierStylePara elsevierViewall">Xerosis is common in elderly patients&#44; in whom it typically affects the pretibial region of the lower legs&#59; its severe form is known as eczema craquel&#233; or asteatotic eczema &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41;&#46; Patients with hormonal disorders and malnutrition are particularly prone to this extreme form of dry skin&#46;</p><p id="par0155" class="elsevierStylePara elsevierViewall">Eczema craquel&#233; has been described in association with lymphomas&#44; gastric adenocarcinoma&#44; glucagonoma&#44; and adenocarcinoma of the pancreas&#46;<a class="elsevierStyleCrossRef" href="#bib0170"><span class="elsevierStyleSup">34</span></a> When the lesions acquire a more inflammatory appearance&#44; are more evident on the trunks and upper legs&#44; and furthermore are refractory to treatment with topical corticosteroids&#44; it is advisable to examine lymph nodes&#44; check for hepatosplenomegaly&#44; and perform blood tests&#44; a chest radiograph&#44; and an abdominal ultrasound to rule out the presence of neoplastic disease&#46;<a class="elsevierStyleCrossRefs" href="#bib0175"><span class="elsevierStyleSup">35&#44;36</span></a></p><p id="par0160" class="elsevierStylePara elsevierViewall">Ichthyosis acquisita &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; is a more severe form of eczema craquel&#233; characterized by small white or brownish rhomboid scales on the extensor surfaces of the extremities and on the trunk&#46; The palms&#44; soles&#44; and flexures are spared &#40;<a class="elsevierStyleCrossRef" href="#fig0025">Figs&#46; 5 and 6</a>&#41;&#46; Ichthyosis acquisita is mostly seen in association with Hodgkin lymphoma&#44; but it can also occur in association with other lymphoproliferative diseases &#40;e&#46;g&#46;&#44; mycosis fungoides&#44; reticulolymphosarcoma&#44; multiple myeloma&#41; and nonlymphoproliferative diseases &#40;ovarian dysgerminoma&#44; leiomyosarcoma&#44; transitional cell cancer of the kidney&#44; hepatocellular carcinoma&#44; breast cancer&#44; and Kaposi sarcoma&#41;&#46; One characteristic feature of ichthyosis acquisita is that it typically appears several weeks or months after diagnosis of the tumor&#46; Its pathogenesis is attributed to reduced synthesis of lipids or to an abnormal immune response&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;37&#8211;39</span></a></p><elsevierMultimedia ident="fig0025"></elsevierMultimedia><p id="par0165" class="elsevierStylePara elsevierViewall">Finally&#44; several patients develop&#44; either initially or at a later stage&#44; generalized exfoliative dermatitis &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; with an erythrodermal appearance and severe scaling&#46; They frequently also have alopecia&#44; nail dystrophy&#44; generalized lymphadenopathy&#44; hypothermia&#44; hypoalbuminemia&#44; and heart failure&#46; In most cases&#44; the condition is associated with direct invasion by a cutaneous T-cell lymphoma&#44; but&#44; more rarely&#44; it can occur in association with other lymphomas or with leukemias or solid tumors&#46;<a class="elsevierStyleCrossRefs" href="#bib0160"><span class="elsevierStyleSup">32&#44;40</span></a></p></span><span id="sec0055" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Pruritus and Prurigo &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0170" class="elsevierStylePara elsevierViewall">Pruritus is a common dermatologic symptom with many causes&#46; In the case of generalized dermatitis&#44; it is important to consider the possibility of an underlying malignancy once the usual benign diseases have been ruled out&#46; Generalized pruritus can be a nonspecific sign of malignancy&#46; It has a complex pathogenesis in which T cell-dysregulation and the production of mediators such as histamine and serotonin by certain tumors has been implicated&#46;<a class="elsevierStyleCrossRefs" href="#bib0010"><span class="elsevierStyleSup">2&#44;23</span></a></p><p id="par0175" class="elsevierStylePara elsevierViewall">The most common malignancy associated with generalized pruritus is Hodgkin lymphoma&#59; this skin condition is observed in over 25&#37; of patients with this cancer and is refractory to conventional treatments&#46;<a class="elsevierStyleCrossRef" href="#bib0160"><span class="elsevierStyleSup">32</span></a> It may also occur in breast cancer&#44; carcinoid syndrome&#44; cutaneous T-cell lymphoma&#44; and gastrointestinal and hepatocellular carcinomas&#46;<a class="elsevierStyleCrossRef" href="#bib0205"><span class="elsevierStyleSup">41</span></a></p><p id="par0180" class="elsevierStylePara elsevierViewall">Patients with severe generalized pruritus may have scratch lesions and excoriated papules &#40;prurigo&#41; in accessible areas&#44; namely&#44; the upper third of the back and the arms and legs&#46;<a class="elsevierStyleCrossRefs" href="#bib0115"><span class="elsevierStyleSup">23&#44;42</span></a></p><p id="par0185" class="elsevierStylePara elsevierViewall">Localized pruritus is very rarely a sign of an underlying malignancy&#46; One example is nasal pruritus&#44; which is a poor prognostic factor in patients with brain tumors&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a></p></span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Hirsutism and Hypertrichosis</span><p id="par0190" class="elsevierStylePara elsevierViewall">Hypertrichosis refers to the growth of hair in an excessive amount or thickness on any part of the body&#44; while hirsutism refers to the excessive growth of body or facial hair with male characteristics and a male distribution pattern in women &#40;<a class="elsevierStyleCrossRef" href="#tbl0025">Table 5</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0025"></elsevierMultimedia><p id="par0195" class="elsevierStylePara elsevierViewall">Hirsutism &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; can be caused by the excessive production of hormones by the adrenal or pituitary glands&#44; but it can also be idiopathic&#46; Abrupt onset sometimes suggests the presence of an androgen-producing tumor &#40;typically ovarian&#41; and is accompanied by hormone changes and other signs of virilization&#46;<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">7</span></a></p><p id="par0200" class="elsevierStylePara elsevierViewall">Acquired hypertrichosis lanuginosa is a rare but typically paraneoplastic condition &#40;<span class="elsevierStyleSup">&#42;</span>&#41; characterized by the sudden appearance of fine&#44; unpigmented hair on the face &#40;<a class="elsevierStyleCrossRef" href="#fig0030">Figs&#46; 6 and 7</a>&#41; and then on the trunk&#44; the axillae&#44; and the extremities&#44; with sparing of the palms&#44; soles&#44; and genital area&#46; In women&#44; there are no other signs of virilization&#46; It is strongly paraneoplastic and is more common in women than in men&#46; Accompanying symptoms may include painful glossitis&#44; angular cheilitis&#44; and papillary hypertrophy of the tongue&#46;</p><elsevierMultimedia ident="fig0030"></elsevierMultimedia><p id="par0205" class="elsevierStylePara elsevierViewall">In men&#44; acquired hypertrichosis lanuginosa is most commonly associated with lung cancer&#44; followed by colorectal cancer&#46; In women&#44; the most common neoplasms are&#44; in order of frequency&#44; colorectal cancer&#44; lung cancer&#44; and breast cancer&#46; However&#44; the condition has also been described in association with cancers of the ovary&#44; uterus&#44; bladder&#44; pancreas&#44; and kidney&#44; as well as with lymphomas and leukemia&#46; It can precede or follow the diagnosis of the tumor&#44; and is usually a sign of poor prognosis&#46;<a class="elsevierStyleCrossRefs" href="#bib0115"><span class="elsevierStyleSup">23&#44;29&#44;43&#44;44</span></a></p></span><span id="sec0065" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Hyperhidrosis and Anhidrosis &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41;</span><p id="par0210" class="elsevierStylePara elsevierViewall">Hyperhidrosis has multiple causes and on rare occasions can indicate the presence of an underlying tumor &#40;<a class="elsevierStyleCrossRef" href="#tbl0030">Table 6</a>&#41;&#46;<ul class="elsevierStyleList" id="lis0010"><li class="elsevierStyleListItem" id="lsti0040"><span class="elsevierStyleLabel">1&#46;</span><p id="par0215" class="elsevierStylePara elsevierViewall">Generalized hyperhidrosis is observed in pheochromocytoma&#44; carcinoid tumors&#44; Hodgkin lymphoma &#40;night sweating&#41;&#44; and tumors of the cerebral cortex&#46;</p></li><li class="elsevierStyleListItem" id="lsti0045"><span class="elsevierStyleLabel">2&#46;</span><p id="par0220" class="elsevierStylePara elsevierViewall">Localized craniofacial hyperhidrosis occurs in situations of minimum stress&#46; When it affects a single cheek and is triggered by the ingestion of certain foods and accompanied by salivation&#44; it is known as Frey syndrome&#44; which results from damage to the parasympathetic fibers in the auriculotemporal nerve&#46; Also known as gustatory sweating&#44; it occurs in parotid disorders&#44; which may be neoplastic&#46;<a class="elsevierStyleCrossRefs" href="#bib0225"><span class="elsevierStyleSup">45&#44;46</span></a></p></li><li class="elsevierStyleListItem" id="lsti0050"><span class="elsevierStyleLabel">3&#46;</span><p id="par0225" class="elsevierStylePara elsevierViewall">Segmental hyperhidrosis is caused by intrathoracic neoplasms that alter the trunk of the sympathetic nerve &#40;lymphomas&#44; mesotheliomas&#44; Pancoast tumor&#44; contralateral lung cancer&#44; or superior mediastinal neurinoma<a class="elsevierStyleCrossRef" href="#bib0235"><span class="elsevierStyleSup">47</span></a>&#41;&#46; The condition is also known as Harlequin syndrome and is characterized by asymmetric flushing and unilateral sweating induced by heat and exercise&#46; It can also be idiopathic&#46;</p></li><li class="elsevierStyleListItem" id="lsti0055"><span class="elsevierStyleLabel">4&#46;</span><p id="par0230" class="elsevierStylePara elsevierViewall">Anhidrosis occurs in neurogenic tumors that affect the central nervous system at the level of the hypothalamus or the spinal cord&#59; it can also occur in association with segmental hyperhidrosis&#46;</p></li></ul></p><elsevierMultimedia ident="tbl0030"></elsevierMultimedia></span><span id="sec0070" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Cutaneous Tumors</span><p id="par0235" class="elsevierStylePara elsevierViewall">Certain benign and malignant tumors are not indicative of malignancy on their own&#44; but they commonly form part of complex syndromes&#44; including certain genodermatoses&#44; that are associated with a higher incidence of neoplasms&#46;<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">6</span></a> Familiarity with these syndromes is key to early diagnosis and treatment and consequently improved survival &#40;<a class="elsevierStyleCrossRef" href="#tbl0035">Table 7</a>&#41;&#46;<ul class="elsevierStyleList" id="lis0015"><li class="elsevierStyleListItem" id="lsti0060"><span class="elsevierStyleLabel">1&#46;</span><p id="par0240" class="elsevierStylePara elsevierViewall">Seborrheic keratoses are very common in elderly patients&#44; but a sudden eruption or increase in the number and size of lesions&#44; accompanied by intense itching&#44; may be indicative of malignancy&#46; This phenomenon is known as the sign of Leser-Tr&#233;lat &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#46; The paraneoplastic nature of these lesions&#44; however&#44; has long been the subject of debate as seborrheic keratoses and neoplasms are relatively common in elderly individuals&#46; The sign of Leser-Tr&#233;lat &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; has been linked to malignant acanthosis nigricans as they sometimes occur together&#46;<a class="elsevierStyleCrossRef" href="#bib0240"><span class="elsevierStyleSup">48</span></a> In such cases&#44; the lesions are most often located on the back and can follow a Christmas tree&#8211;like pattern&#46; Pruritus is an important symptom&#46; The sign of Leser-Tr&#233;lat has been associated with gastrointestinal adenocarcinomas and lymphoproliferative diseases&#44; and&#44; less commonly&#44; with lung&#44; bladder&#44; renal&#44; ovarian&#44; and breast cancer&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;23&#44;31&#44;49</span></a></p></li><li class="elsevierStyleListItem" id="lsti0065"><span class="elsevierStyleLabel">2&#46;</span><p id="par0245" class="elsevierStylePara elsevierViewall">A similar condition&#44; dermatosis papulosa nigra &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; affects black individuals and has occasionally been linked to malignancy&#46;<a class="elsevierStyleCrossRef" href="#bib0250"><span class="elsevierStyleSup">50</span></a></p></li><li class="elsevierStyleListItem" id="lsti0070"><span class="elsevierStyleLabel">3&#46;</span><p id="par0250" class="elsevierStylePara elsevierViewall">Cutaneous florid papillomatosis &#40;<span class="elsevierStyleSup">&#42;</span>&#41; consists of the development of multiple wartlike lesions on the trunk&#44; face&#44; and extremities&#46; With an identical appearance to that of viral warts&#44; these lesions multiply rapidly and become confluent&#44; occasionally causing unsightly growths and disfigurement of the hands and feet&#46; It is a paraneoplastic disorder that in the opinion of some authors is a clinical variant of malignant acanthosis nigricans&#46;<a class="elsevierStyleCrossRef" href="#bib0185"><span class="elsevierStyleSup">37</span></a> It has been described in association with gastric&#44; breast&#44; lung&#44; and ovarian cancer&#46;<a class="elsevierStyleCrossRefs" href="#bib0255"><span class="elsevierStyleSup">51&#8211;54</span></a></p></li><li class="elsevierStyleListItem" id="lsti0075"><span class="elsevierStyleLabel">4&#46;</span><p id="par0255" class="elsevierStylePara elsevierViewall">Multiple sebaceous gland tumors &#40;sebaceous adenomas and carcinomas&#41; located on the trunk are part of Muir-Torre syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; which runs in families and is associated with carcinomas of the gastrointestinal tract&#46; When there is a single tumor located on the head or neck&#44; it is not usually indicative of malignancy&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0080"><span class="elsevierStyleLabel">5&#46;</span><p id="par0260" class="elsevierStylePara elsevierViewall">The coexistence of trichilemmomas&#44; lipomas&#44; and angiomas suggests a diagnosis of Cowden disease &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; &#40;multiple hamartoma syndrome&#41;&#44; a hereditary disorder associated with an increased risk of breast&#44; thyroid&#44; endometrial&#44; lung&#44; and colon cancer&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0085"><span class="elsevierStyleLabel">6&#46;</span><p id="par0265" class="elsevierStylePara elsevierViewall">Gardner syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; which is characterized by the occurrence of large&#44; multiple epidermal cysts&#44; fibromas&#44; leiomyomas&#44; trichoepitheliomas&#44; and neurofibromas&#44; is an autosomal dominant condition that can occur in association with colon cancer&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0090"><span class="elsevierStyleLabel">7&#46;</span><p id="par0270" class="elsevierStylePara elsevierViewall">Fibrofolliculomas and trichodiscomas are seen in Birt-Hogg-Dub&#233; syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; an autosomal dominant disorder associated with an increased risk of lung and renal cell carcinoma&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0095"><span class="elsevierStyleLabel">8&#46;</span><p id="par0275" class="elsevierStylePara elsevierViewall">Multiple leiomyomas in a bandlike or segmental distribution &#40;<a class="elsevierStyleCrossRef" href="#fig0035">Figs&#46; 7 and 8</a>&#41; may be associated with renal cell tumors&#44; forming part of a syndrome known as hereditary leiomyomatosis and renal cell cancer &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p><elsevierMultimedia ident="fig0035"></elsevierMultimedia></li><li class="elsevierStyleListItem" id="lsti0100"><span class="elsevierStyleLabel">9&#46;</span><p id="par0280" class="elsevierStylePara elsevierViewall">Familial atypical multiple mole melanoma &#40;FAMMM&#41; syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; is a relatively unknown genetic disorder associated with a high risk of melanoma and pancreatic cancer&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0105"><span class="elsevierStyleLabel">10&#46;</span><p id="par0285" class="elsevierStylePara elsevierViewall">Multiple mucosal neuroma syndrome &#40;multiple endocrine neoplasia syndrome&#41; &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; is characterized by the development of multiple neuromas of the lips&#44; the tongue&#44; the lip mucosa&#44; and the gums&#46; It is an autosomal dominant condition associated with a higher incidence of pheochromocytoma and medullary carcinoma of the thyroid&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0110"><span class="elsevierStyleLabel">11&#46;</span><p id="par0290" class="elsevierStylePara elsevierViewall">Neurofibromatosis type I &#40;von Recklinghausen disease&#41; &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; is an autosomal dominant neurocutaneous syndrome with freckling in the axillary and groin regions&#44; caf&#233; au lait spots&#44; neurofibromas&#44; and on occasions&#44; plexiform neurofibromas &#40;<a class="elsevierStyleCrossRef" href="#fig0040">Figs&#46; 8 and 9</a>&#41;&#46; It can be complicated by the malignant transformation of plexiform neurofibromas&#46; As the disease evolves&#44; patients can develop certain malignancies&#44; such as Wilms tumor&#44; rhabdomyosarcoma&#44; retinoblastoma&#44; melanoma&#44; intestinal leiomyosarcoma&#44; medulloblastoma&#44; and leukemia&#46; Pheochromocytomas are benign in 90&#37; of cases&#46; There have also been reports of familial early-onset breast cancer and other gynecological tumors&#46;<a class="elsevierStyleCrossRefs" href="#bib0010"><span class="elsevierStyleSup">2&#44;29</span></a></p><elsevierMultimedia ident="fig0040"></elsevierMultimedia></li><li class="elsevierStyleListItem" id="lsti0115"><span class="elsevierStyleLabel">12&#46;</span><p id="par0295" class="elsevierStylePara elsevierViewall">Tuberous sclerosis &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; is an autosomal dominant condition that causes the growth of hamartomas on the skin&#44; the brain&#44; the kidney&#44; and the heart&#46; Characteristic skin lesions include facial angiofibromas &#40;<a class="elsevierStyleCrossRef" href="#fig0045">Figs&#46; 9 and 10</a>&#41;&#44; periungual fibromas &#40;Koenen tumors&#41; &#40;<a class="elsevierStyleCrossRef" href="#fig0050">Figs&#46; 10 and 11</a>&#41;&#44; shagreen patches&#44; and hypopigmented ash-leaf macules&#46; The most common tumors in patients with tuberous sclerosis are cerebral astrocytomas&#44; followed by clear cell renal cell carcinomas&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a></p><elsevierMultimedia ident="fig0045"></elsevierMultimedia><elsevierMultimedia ident="fig0050"></elsevierMultimedia></li><li class="elsevierStyleListItem" id="lsti0120"><span class="elsevierStyleLabel">13&#46;</span><p id="par0300" class="elsevierStylePara elsevierViewall">Gorlin syndrome&#44; also known as nevoid basal cell carcinoma syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; is an autosomal dominant condition consisting of multiple basal cell carcinomas&#44; jaw cysts&#44; palmoplantar pits&#44; and bone anomalies&#44; among other features &#40;<a class="elsevierStyleCrossRef" href="#fig0055">Figs&#46; 12 and 13</a>&#41;&#46; Patients with this syndrome may also develop other malignancies such as medulloblastomas&#44; oligodendrogliomas&#44; ovarian fibrosarcoma&#44; and Hodgkin and non-Hodgkin lymphoma&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a></p><elsevierMultimedia ident="fig0055"></elsevierMultimedia></li></ul></p><elsevierMultimedia ident="tbl0035"></elsevierMultimedia></span><span id="sec0075" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Mouth Changes</span><p id="par0305" class="elsevierStylePara elsevierViewall">The mouth is the site of many manifestations related to several paraneoplastic signs that have already been discussed &#40;<a class="elsevierStyleCrossRef" href="#tbl0040">Table 8</a>&#41;&#46; These include macroglossia &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; in systemic amyloidosis and myeloma&#59; glossitis &#40;<span class="elsevierStyleSup">&#42;</span>&#41; in migratory necrolytic erythema and acquired hypertrichosis lanuginosa&#59; erosive lesions in paraneoplastic pemphigus &#40;<span class="elsevierStyleSup">&#42;</span>&#41;&#59; wartlike growths and papillomatosis on the tongue and lips &#40;<span class="elsevierStyleSup">&#42;</span>&#41; in malignant nigricans acanthosis and cutaneous florid papillomatosis<a class="elsevierStyleCrossRef" href="#bib0255"><span class="elsevierStyleSup">51</span></a>&#59; and mouth ulcers &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; in Sweet syndrome&#46;<a class="elsevierStyleCrossRef" href="#bib0275"><span class="elsevierStyleSup">55</span></a> Oral leukoplakia in dyskeratosis congenita<a class="elsevierStyleCrossRef" href="#bib0280"><span class="elsevierStyleSup">56</span></a> and pachyonychia congenita<a class="elsevierStyleCrossRef" href="#bib0285"><span class="elsevierStyleSup">57</span></a> will be discussed in the following section on nail changes as these are the main manifestations of these conditions&#46;</p><elsevierMultimedia ident="tbl0040"></elsevierMultimedia></span><span id="sec0080" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">Nail Changes</span><p id="par0310" class="elsevierStylePara elsevierViewall">Nail changes in isolation do not tend to have much relevance in systemic malignancies&#44; but nail dystrophy is a symptom of numerous paraneoplastic conditions&#44; some of which have already been discussed in the first part of this review&#46; These conditions include acrokeratosis paraneoplastica of Bazex &#40;horizontal or longitudinal ridges and total nail dystrophy&#41;&#59; pachydermoperiostosis or hypertrophic osteoarthropathy &#40;acropathy&#41;&#59; paraneoplastic pemphigus &#40;paronychia and lichenoid nail dystrophy&#41;&#59; tuberous sclerosis &#40;Koenen tumors&#41;&#59; and&#44; probably other conditions with late onset of nail changes&#44; including carcinoid syndrome&#44; erythema gyratum repens&#44; and generalized exfoliative dermatitis&#46;</p><p id="par0315" class="elsevierStylePara elsevierViewall">In certain syndromes&#44; however&#44; nail dystrophy is a key sign indicating the possible presence of an underlying neoplasm&#46; The most relevant of these syndromes are listed in <a class="elsevierStyleCrossRef" href="#tbl0045">Table 9</a>&#46;</p><elsevierMultimedia ident="tbl0045"></elsevierMultimedia><span id="sec0085" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0105">Yellow Nail Syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0320" class="elsevierStylePara elsevierViewall">Yellow nail syndrome is a rare condition of unknown etiology&#44; although it is known that hypoplasia of the lymphatic system plays an important role&#46; There have also been occasional reports of the syndrome affecting members of the same family&#46; Yellow nail syndrome is characterized by thick&#44; overcurved greenish nails with loss of cuticle and on occasions the presence of onycholysis &#40;<a class="elsevierStyleCrossRefs" href="#fig0060">Figs&#46; 13 and 14</a>&#41;&#46; Nail growth cessation is not uncommon&#46; The changes can occur alone or in association with a systemic disorder&#44; and it is therefore advisable to rule out respiratory diseases&#44; primary lymphedema&#44; autoimmune diseases such as rheumatoid arthritis&#44; and malignant tumors such as breast cancer and lymphomas&#46;<a class="elsevierStyleCrossRefs" href="#bib0290"><span class="elsevierStyleSup">58&#44;59</span></a></p><elsevierMultimedia ident="fig0060"></elsevierMultimedia><elsevierMultimedia ident="fig0065"></elsevierMultimedia></span><span id="sec0090" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0110">Dyskeratosis Congenita &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0325" class="elsevierStylePara elsevierViewall">Dyskeratosis congenita is a multisystemic X-linked recessive disorder characterized by the triad of nail changes&#44; reticulated hyperpigmentation&#44; and leukoplakia of any of the mucous membranes&#44; although the oral mucosa is the most frequently affected&#46;</p><p id="par0330" class="elsevierStylePara elsevierViewall">Nail changes occur early on in the disease&#46; The nails are initially fragile and uneven&#46; They remain small and can even be absent or barely noticeable&#46; The changes first affect the fingernails and then the toenails&#46;</p><p id="par0335" class="elsevierStylePara elsevierViewall">Patients with dyskeratosis congenita have a high risk of aplastic anemia&#44; myelodysplastic syndrome&#44; leukemia&#44; and solid tumors&#46; Leukoplakia&#44; in turn&#44; is associated with a higher incidence of squamous cell carcinoma of the mouth&#44; the rectum&#44; the cervix&#44; the vagina&#44; the esophagus&#44; and the skin&#46;<a class="elsevierStyleCrossRef" href="#bib0280"><span class="elsevierStyleSup">56</span></a></p></span><span id="sec0095" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0115">Pachyonychia Congenita &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0340" class="elsevierStylePara elsevierViewall">Pachyonychia congenita refers to a group of ectodermal dysplasias with an autosomal dominant pattern of inheritance&#46; There are 2 main types&#58; pachyonychia congenita type 1 &#40;Jadassohn-Lewandowsky&#41; and pachyonychia congenita type 2 &#40;Jakson-Lawler&#41;&#46; Type 1 is characterized by palmoplantar keratoderma&#44; follicular keratosis of the knees and elbows&#44; and oral leukokeratosis and requires close follow-up to check for the development of squamous cell carcinoma&#46; Pachyonychia congenita type 2&#44; in turn&#44; is characterized by steatocystoma multiplex and vellus hair cysts&#44; in addition to many other alterations&#46;</p><p id="par0345" class="elsevierStylePara elsevierViewall">Both types are characterized by considerable thickening of the nails due to subungual hyperkeratosis in the distal portion&#46; The nails acquire a yellow-grayish color and have transverse overcurvature&#46; Nail dystrophy develops during childhood&#46;<a class="elsevierStyleCrossRef" href="#bib0285"><span class="elsevierStyleSup">57</span></a></p></span></span><span id="sec0100" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0120">Conflicts of Interest</span><p id="par0350" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest&#46;</p></span></span>"
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        0 => array:2 [
          "identificador" => "xres261449"
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          "titulo" => "Keywords"
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        2 => array:2 [
          "identificador" => "xres261448"
          "titulo" => "Resumen"
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          "titulo" => "Palabras clave"
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        4 => array:2 [
          "identificador" => "sec0005"
          "titulo" => "Introduction"
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        5 => array:3 [
          "identificador" => "sec0010"
          "titulo" => "Erosive and Bullous Lesions"
          "secciones" => array:1 [
            0 => array:2 [
              "identificador" => "sec0015"
              "titulo" => "Paraneoplastic Pemphigus &#40;&#41;"
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          ]
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        6 => array:3 [
          "identificador" => "sec0020"
          "titulo" => "Skin Disorders With Inflammatory Papules and Nodules"
          "secciones" => array:5 [
            0 => array:2 [
              "identificador" => "sec0025"
              "titulo" => "Necrobiotic Xanthogranuloma &#40;&#41;"
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            1 => array:2 [
              "identificador" => "sec0030"
              "titulo" => "Multicentric Reticulohistiocytosis &#40;&#41;"
            ]
            2 => array:2 [
              "identificador" => "sec0035"
              "titulo" => "Sweet Syndrome or Acute Febrile Neutrophilic Dermatosis &#40;&#41;"
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            3 => array:2 [
              "identificador" => "sec0040"
              "titulo" => "Cutaneous Sarcoidosis &#40;&#41;"
            ]
            4 => array:2 [
              "identificador" => "sec0045"
              "titulo" => "Necrotizing Panniculitis or Subcutaneous Fat Necrosis&#40;&#41;"
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        ]
        7 => array:2 [
          "identificador" => "sec0050"
          "titulo" => "Xerosis&#44; Ichthyosis&#44; Exfoliative Dermatitis &#40;Erythroderma&#41;"
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        8 => array:2 [
          "identificador" => "sec0055"
          "titulo" => "Pruritus and Prurigo &#40;&#41;"
        ]
        9 => array:2 [
          "identificador" => "sec0060"
          "titulo" => "Hirsutism and Hypertrichosis"
        ]
        10 => array:2 [
          "identificador" => "sec0065"
          "titulo" => "Hyperhidrosis and Anhidrosis &#40;&#41;"
        ]
        11 => array:2 [
          "identificador" => "sec0070"
          "titulo" => "Cutaneous Tumors"
        ]
        12 => array:2 [
          "identificador" => "sec0075"
          "titulo" => "Mouth Changes"
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        13 => array:3 [
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          "titulo" => "Nail Changes"
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            0 => array:2 [
              "identificador" => "sec0085"
              "titulo" => "Yellow Nail Syndrome &#40;&#41;"
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            1 => array:2 [
              "identificador" => "sec0090"
              "titulo" => "Dyskeratosis Congenita &#40;&#41;"
            ]
            2 => array:2 [
              "identificador" => "sec0095"
              "titulo" => "Pachyonychia Congenita &#40;&#41;"
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          ]
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        14 => array:2 [
          "identificador" => "sec0100"
          "titulo" => "Conflicts of Interest"
        ]
        15 => array:1 [
          "titulo" => "References"
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    "fechaRecibido" => "2012-05-07"
    "fechaAceptado" => "2012-05-07"
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          "clase" => "keyword"
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          "palabras" => array:3 [
            0 => "Cutaneous manifestations"
            1 => "Neoplasm"
            2 => "Cutaneous paraneoplastic syndrome"
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            0 => "Alertas cut&#225;neas"
            1 => "Neoplasia"
            2 => "S&#237;ndromes paraneopl&#225;sicos cut&#225;neos"
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        "titulo" => "Abstract"
        "resumen" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">The skin can be key to early diagnosis of systemic malignancies&#46; In the second part of this review&#44; we present various skin conditions that can&#44; in certain contexts&#44; reveal the presence of malignancy&#46; The skin conditions are presented in groups based on a diverse range of morphological characteristics&#46; Specifically&#44; the following groups are analyzed&#58; erosive and blistering lesions&#59; inflammatory papules and nodules&#59; xerosis&#44; ichthyosis&#44; and generalized exfoliative dermatitis&#59; symptoms such as pruritus&#59; abnormal hair distribution patterns&#59; sweating disorders&#59; benign tumors that can form part of hereditary syndromes associated with a risk of visceral cancer&#59; and finally&#44; oral and nail abnormalities&#46;</p><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">This review highlights the importance of the skin in the study of systemic malignancies&#46;</p>"
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        "resumen" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">La piel puede ser &#8220;clave&#8221; en el diagn&#243;stico precoz de neoplasias sist&#233;micas&#46; En esta segunda parte se abordan una serie de dermatosis agrupadas por sus caracter&#237;sticas morfol&#243;gicas&#44; muy diversas&#44; que en un contexto apropiado contribuyen a desenmascarar procesos malignos&#46; Se analizan las lesiones erosivas y ampollares&#44; las p&#225;pulas y n&#243;dulos inflamatorios&#44; la xerosis&#44; ictiosis&#44; dermatitis exfoliativa generalizada&#44; s&#237;ntomas como el prurito&#44; alteraciones de la distribuci&#243;n del pelo&#44; trastornos de la sudoraci&#243;n&#44; tumores benignos que pueden formar parte de s&#237;ndromes heredofamiliares en cuya evoluci&#243;n se puede desarrollar c&#225;ncer visceral&#46; Por &#250;ltimo se describen las lesiones ungueales y bucales en relaci&#243;n con malignidad sist&#233;mica&#46;</p><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">En definitiva&#44; se destaca la importancia de la piel en el estudio de las neoplasias sist&#233;micas&#46;</p>"
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        "nota" => "<p class="elsevierStyleNotepara" id="npar0080">Please cite this article as&#58; Yuste Chaves M&#44; Unamuno P&#233;rez P&#46; Alertas cut&#225;neas en malignidades sist&#233;micas &#40;parte 2&#41;&#46; Actas Dermosifiliogr&#46; 2013&#59;104&#58;543&#8211;53&#46;</p>"
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          "en" => "<p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">Tuberous sclerosis &#40;facial angiofibromas&#41;&#46;</p>"
        ]
      ]
      9 => array:7 [
        "identificador" => "fig0050"
        "etiqueta" => "Figure 11"
        "tipo" => "MULTIMEDIAFIGURA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "figura" => array:1 [
          0 => array:4 [
            "imagen" => "gr11.jpeg"
            "Alto" => 1553
            "Ancho" => 1583
            "Tamanyo" => 264860
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        "descripcion" => array:1 [
          "en" => "<p id="spar0070" class="elsevierStyleSimplePara elsevierViewall">Tuberous sclerosis &#40;Koenen tumor&#41;&#46;</p>"
        ]
      ]
      10 => array:7 [
        "identificador" => "fig0055"
        "etiqueta" => "Figure 12"
        "tipo" => "MULTIMEDIAFIGURA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "figura" => array:1 [
          0 => array:4 [
            "imagen" => "gr12.jpeg"
            "Alto" => 1052
            "Ancho" => 1583
            "Tamanyo" => 230124
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        "descripcion" => array:1 [
          "en" => "<p id="spar0075" class="elsevierStyleSimplePara elsevierViewall">Gorlin syndrome &#40;multiple basal cell carcinomas&#41;&#46;</p>"
        ]
      ]
      11 => array:7 [
        "identificador" => "fig0060"
        "etiqueta" => "Figure 13"
        "tipo" => "MULTIMEDIAFIGURA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "figura" => array:1 [
          0 => array:4 [
            "imagen" => "gr13.jpeg"
            "Alto" => 1572
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            "Tamanyo" => 225096
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        "descripcion" => array:1 [
          "en" => "<p id="spar0080" class="elsevierStyleSimplePara elsevierViewall">Gorlin syndrome &#40;palmar pits&#41;&#46;</p>"
        ]
      ]
      12 => array:7 [
        "identificador" => "fig0065"
        "etiqueta" => "Figure 14"
        "tipo" => "MULTIMEDIAFIGURA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "figura" => array:1 [
          0 => array:4 [
            "imagen" => "gr14.jpeg"
            "Alto" => 1532
            "Ancho" => 1583
            "Tamanyo" => 261176
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        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0085" class="elsevierStyleSimplePara elsevierViewall">Yellow nail syndrome&#46;</p>"
        ]
      ]
      13 => array:7 [
        "identificador" => "tbl0005"
        "etiqueta" => "Table 1"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:1 [
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Facial reddening&#44; swelling&#44; and flushing&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Hyperpigmentation&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Annular lesions&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Erythematosquamous and hyperkeratotic lesions&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Skin thickening and hardening&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Vascular lesions&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Erosive and bullous lesions&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Inflammatory papules and nodules&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Xerosis&#44; ichthyosis exfoliative dermatitis &#40;erythroderma&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Pruritus and prurigo&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Hirsutism and hypertrichosis&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Hyperhidrosis and anhidrosis&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Cutaneous tumors&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Mouth changes&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Nail changes&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
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        "descripcion" => array:1 [
          "en" => "<p id="spar0090" class="elsevierStyleSimplePara elsevierViewall">Possible Cutaneous Signs of Internal Malignancies&#46;</p>"
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      14 => array:7 [
        "identificador" => "tbl0010"
        "etiqueta" => "Table 2"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:2 [
          "tablatextoimagen" => array:1 [
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              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Paraneoplastic pemphigus<a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Other erosive-bullous diseases&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Bullous pemphigoid<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Cicatricial pemphigoid<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Dermatitis herpetiformis<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Linear immunoglobulin A bullous dermatosis<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Epidermolysis bullosa acquisita<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Pemphigus foliaceus<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Exudative erythema multiforme<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
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            1 => array:3 [
              "identificador" => "tblfn0010"
              "etiqueta" => "&#42;&#42;&#42;"
              "nota" => "<p class="elsevierStyleNotepara" id="npar0010">Condition exceptionally associated with an internal malignancy&#46;</p>"
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        "descripcion" => array:1 [
          "en" => "<p id="spar0095" class="elsevierStyleSimplePara elsevierViewall">Skin Disorders With Erosive and Bullous Lesions Potentially Associated With an Internal Malignancy&#46;</p>"
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        "identificador" => "tbl0015"
        "etiqueta" => "Table 3"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:2 [
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Necrobiotic xanthogranuloma<a class="elsevierStyleCrossRef" href="#tblfn0015"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Multicentric reticulohistiocytosis<a class="elsevierStyleCrossRef" href="#tblfn0015"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Sweet syndrome<a class="elsevierStyleCrossRef" href="#tblfn0015"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Pyoderma gangrenosum<a class="elsevierStyleCrossRef" href="#tblfn0015"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Cutaneous sarcoidosis<a class="elsevierStyleCrossRef" href="#tblfn0020"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Erythema nodosum<a class="elsevierStyleCrossRef" href="#tblfn0020"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Necrotizing panniculitis&#44; or subcutaneous fat necrosis<a class="elsevierStyleCrossRef" href="#tblfn0015"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
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            1 => array:3 [
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        "descripcion" => array:1 [
          "en" => "<p id="spar0100" class="elsevierStyleSimplePara elsevierViewall">Skin disorders With Inflammatory Papules and Nodules Potentially Associated With an Internal Malignancy&#46;</p>"
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      16 => array:7 [
        "identificador" => "tbl0020"
        "etiqueta" => "Table 4"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
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                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Eczema craquel&#233; or asteatotic eczema<a class="elsevierStyleCrossRef" href="#tblfn0030"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Ichthyosis acquisita<a class="elsevierStyleCrossRef" href="#tblfn0025"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Generalized exfoliative dermatitis &#40;erythroderma&#41;<a class="elsevierStyleCrossRef" href="#tblfn0025"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
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                0 => "xTab367482.png"
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              "nota" => "<p class="elsevierStyleNotepara" id="npar0025">Condition occasionally associated with an internal malignancy&#46;</p>"
            ]
            1 => array:3 [
              "identificador" => "tblfn0030"
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              "nota" => "<p class="elsevierStyleNotepara" id="npar0030">Condition exceptionally associated with an internal malignancy&#46;</p>"
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        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0105" class="elsevierStyleSimplePara elsevierViewall">Conditions With Dry Skin Potentially Associated With an Internal Malignancy&#46;</p>"
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        "identificador" => "tbl0025"
        "etiqueta" => "Table 5"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:2 [
          "tablatextoimagen" => array:1 [
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                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Hirsutism<a class="elsevierStyleCrossRef" href="#tblfn0040"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Acquired hypertrichosis lanuginosa<a class="elsevierStyleCrossRef" href="#tblfn0035"><span class="elsevierStyleSup">&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
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              "identificador" => "tblfn0035"
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                    0 => array:2 [
                      "titulo" => "Cutaneous manifestations of internal malignancies"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:4 [
                            0 => "S&#46; Brenner"
                            1 => "E&#46; Tamir"
                            2 => "N&#46; Maharshak"
                            3 => "J&#46; Shapira"
                          ]
                        ]
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                    0 => array:1 [
                      "Revista" => array:6 [
                        "tituloSerie" => "Clin Dermatol"
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                        "paginaInicial" => "290"
                        "paginaFinal" => "297"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/11479041"
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                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Cutaneous manifestations of internal malignancy&#58; diagnosis and management"
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                        0 => array:2 [
                          "etal" => false
                          "autores" => array:3 [
                            0 => "C&#46;E&#46; Kleyn"
                            1 => "J&#46;E&#46; Lai-Cheong"
                            2 => "H&#46;K&#46; Bell"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:1 [
                      "Revista" => array:6 [
                        "tituloSerie" => "Am J Clin Dermatol"
                        "fecha" => "2006"
                        "volumen" => "7"
                        "paginaInicial" => "71"
                        "paginaFinal" => "84"
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                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/16605288"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
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              "identificador" => "bib0015"
              "etiqueta" => "3"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Clinical and pathologic findings of paraneoplastic dermatoses"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:5 [
                            0 => "V&#46;Q&#46; Chung"
                            1 => "M&#46; Sci"
                            2 => "S&#46;L&#46; Moschella"
                            3 => "A&#46; Zembowicz"
                            4 => "V&#46; Liu"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1016/j.jaad.2004.06.051"
                      "Revista" => array:6 [
                        "tituloSerie" => "J Am Acad Dermatol"
                        "fecha" => "2006"
                        "volumen" => "54"
                        "paginaInicial" => "745"
                        "paginaFinal" => "762"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/16635655"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
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              "identificador" => "bib0020"
              "etiqueta" => "4"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "S&#237;ndromes paraneopl&#225;sicos de expresi&#243;n cut&#225;nea"
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                        0 => array:2 [
                          "etal" => false
                          "autores" => array:1 [
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                      "LibroEditado" => array:3 [
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                0 => array:2 [
                  "contribucion" => array:1 [
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                      "titulo" => "Paraneoplastic vasculitis and paraneoplastic vascular syndromes"
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                          "autores" => array:6 [
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                            2 => "M&#46; Grazzini"
                            3 => "V&#46; Va&#353;k&#367;"
                            4 => "J&#46; Hercogov&#225;"
                            5 => "T&#46; Lotti"
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                        ]
                      ]
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                    0 => array:2 [
                      "doi" => "10.1111/j.1529-8019.2010.01367.x"
                      "Revista" => array:6 [
                        "tituloSerie" => "Dermatol Ther"
                        "fecha" => "2010"
                        "volumen" => "23"
                        "paginaInicial" => "597"
                        "paginaFinal" => "605"
                        "link" => array:1 [
                          0 => array:2 [
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Review
Cutaneous Manifestations of Systemic Malignancies: Part 2
Alertas cutáneas en malignidades sistémicas (parte 2)
M. Yuste Chaves
Corresponding author
manuelayuste@hotmail.com

Corresponding author.
, P. Unamuno Pérez
Servicio de Dermatología, Hospital Universitario de Salamanca, Salamanca, Spain
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While some of these manifestations occur in isolation&#44; others form part of complex paraneoplastic syndromes&#46; In both cases&#44; however&#44; they can indicate the presence of an underlying neoplasm&#46;<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1&#8211;7</span></a></p><p id="par0020" class="elsevierStylePara elsevierViewall">In the second part of this review&#44; we will continue with our analysis of cutaneous signs and symptoms that can lead to a diagnosis of an underlying malignancy irrespective of whether or not they form part of a paraneoplastic syndrome&#46; We look at a wide range of conditions&#44; some of which are considered classic paraneoplastic syndromes &#40;marked with an asterisk &#91;&#42;&#93;&#41; and others that correspond to a diverse group of skin conditions frequently seen in routine practice&#46; While this second group of conditions do not normally indicate malignancy&#44; in certain situations and with certain features&#44; they can alert the dermatologist to the presence of an underlying tumor&#46; In all cases&#44; a high index of clinical suspicion is required&#46; In such cases&#44; the dermatologist will be responsible for ordering additional tests&#44; if warranted&#44; and for monitoring the patient&#46; This is particularly important in conditions that are not commonly associated with malignancy or that are associated with a higher risk of certain tumors&#46; We have used 2 asterisks &#40;&#42;&#42;&#41; to denote conditions that are occasionally associated with an internal malignancy and 3 asterisks &#40;&#42;&#42;&#42;&#41; to denote those that are only rarely associated &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0025" class="elsevierStylePara elsevierViewall">The signs and symptoms are classified according to clinical morphologic criteria and listed in random order &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46; The first lesions dealt with in the second part of this review are erosive and bullous lesions&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">Erosive and Bullous Lesions</span><p id="par0030" class="elsevierStylePara elsevierViewall">The presence of erosions and blisters on the skin and mucous membranes can indicate the presence of conditions such as lichen planus&#44; erythema multiforme exudativum&#44; and autoimmune bullous disorders&#46; These erosive and bullous lesions can sometimes coexist in certain conditions &#40;e&#46;g&#46;&#44; paraneoplastic pemphigus<a class="elsevierStyleCrossRefs" href="#bib0040"><span class="elsevierStyleSup">8&#44;9</span></a>&#41; in association with an underlying malignancy&#44; affecting both children<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">10</span></a> and adults &#40;<a class="elsevierStyleCrossRef" href="#tbl0010">Table 2</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0010"></elsevierMultimedia><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Paraneoplastic Pemphigus &#40;<span class="elsevierStyleSup">&#42;</span>&#41;</span><p id="par0035" class="elsevierStylePara elsevierViewall">Paraneoplastic pemphigus has certain features that distinguish it from pemphigus vulgaris&#44; namely&#44; persistent severe&#44; painful stomatitis&#59; involvement of other mucosa&#59; and&#44; in certain cases&#44; the presence of polymorphous&#44; vesicular&#44; lichenoid skin eruptions that sometimes mimic the lesions seen in erythema multiforme exudativum&#44; toxic epidermal necrolysis&#44; erythroderma&#44; or lichen planus&#46; Acral lesions affecting the palms and soles and paronychia are common in paraneoplastic pemphigus but rarely observed in pemphigus vulgaris &#40;<a class="elsevierStyleCrossRefs" href="#fig0005">Figs&#46; 1 and 2</a>&#41;&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0040" class="elsevierStylePara elsevierViewall">Histologic examination of skin biopsy specimens from patients with paraneoplastic pemphigus shows interface dermatitis&#44; vacuolization of the basement membrane&#44; necrotic keratinocytes&#44; suprabasal clefting&#44; and acantholysis&#46; The lichenoid inflammatory infiltrate may also be more predominant than in pemphigus vulgaris&#46; Direct immunofluorescence testing reveals immunoglobulin &#40;Ig&#41; G and C3 deposits in intercellular epidermal spaces and at the dermal-epidermal junction&#44; but negative results are also a characteristic feature of paraneoplastic pemphigus&#46;<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">11</span></a> Circulating antiplatelet antibodies are detected in peripheral blood&#46;</p><p id="par0045" class="elsevierStylePara elsevierViewall">In two-thirds of cases&#44; the underlying neoplasm is diagnosed before the onset of pemphigus&#46; The most commonly associated malignancies are non-Hodgkin lymphoma&#44; chronic lymphoid leukemia&#44; and Castleman disease &#40;which is more common in children&#41;&#46; Less common malignancies are thymoma&#44; Waldenstr&#246;m macroglobulinemia&#44; lung adenocarcinoma&#44; follicular lymphoma&#44; retroperitoneal liposarcoma&#44; and on occasions&#44; hepatocellular carcinoma&#46;<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">12</span></a></p><p id="par0050" class="elsevierStylePara elsevierViewall">In the remaining one-third of cases&#44; the neoplasm appears after the pemphigus lesions&#44; hence the importance of screening for occult disease in patients with persistent mucosal lesions that are refractory to treatment&#46; Respiratory failure due to bronchiolitis obliterans is common&#8212;and fatal&#8212;in patients with paraneoplastic pemphigus&#44; who may die within a month to 2 years of diagnosis of this lung disease&#46;<a class="elsevierStyleCrossRefs" href="#bib0065"><span class="elsevierStyleSup">13&#44;14</span></a></p><p id="par0055" class="elsevierStylePara elsevierViewall">The autoimmune bullous diseases listed below may also be paraneoplastic&#44; but their association with underlying neoplasms is a subject of debate as an association has only occasionally been observed and therefore might be coincidental&#46;<ul class="elsevierStyleList" id="lis0005"><li class="elsevierStyleListItem" id="lsti0005"><span class="elsevierStyleLabel">1&#46;</span><p id="par0060" class="elsevierStylePara elsevierViewall">Bullous pemphigoid &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; occurs in elderly patients at a rate that would be expected for this age group&#46; However&#44; there have been reports of cases refractory to conventional treatment in patients with cancer&#46;</p></li><li class="elsevierStyleListItem" id="lsti0010"><span class="elsevierStyleLabel">2&#46;</span><p id="par0065" class="elsevierStylePara elsevierViewall">Cicatricial pemphigoid &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; has been classified as paraneoplastic in certain cases of antiepiligrin cicatricial pemphigoid&#46;</p></li><li class="elsevierStyleListItem" id="lsti0015"><span class="elsevierStyleLabel">3&#46;</span><p id="par0070" class="elsevierStylePara elsevierViewall">Patients with celiac disease and dermatitis herpetiforme &#40;&#42;&#42;&#42;&#41;&#44; a blistering disease frequently associated with gluten enteropathy&#44; can develop intestinal lymphoma&#46;</p></li><li class="elsevierStyleListItem" id="lsti0020"><span class="elsevierStyleLabel">4&#46;</span><p id="par0075" class="elsevierStylePara elsevierViewall">Linear IgA bullous dermatosis &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; has been described in association with lymphoproliferative diseases and renal cell carcinoma&#46;<a class="elsevierStyleCrossRefs" href="#bib0075"><span class="elsevierStyleSup">15&#8211;17</span></a></p></li><li class="elsevierStyleListItem" id="lsti0025"><span class="elsevierStyleLabel">5&#46;</span><p id="par0080" class="elsevierStylePara elsevierViewall">A diagnosis of epidermolysis bullosa acquisita &#40;&#42;&#42;&#42;&#41;&#44; which is characterized by antibodies to type VII collagen&#44; may indicate the presence of a lymphoreticular or other tumor&#46;<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">18</span></a></p></li><li class="elsevierStyleListItem" id="lsti0030"><span class="elsevierStyleLabel">6&#46;</span><p id="par0085" class="elsevierStylePara elsevierViewall">There has been an anecdotal report of pemphigus foliaceus &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; associated with non-Hodgkin lymphoma that responded to treatment with rituximab&#46;<a class="elsevierStyleCrossRef" href="#bib0095"><span class="elsevierStyleSup">19</span></a></p></li><li class="elsevierStyleListItem" id="lsti0035"><span class="elsevierStyleLabel">7&#46;</span><p id="par0090" class="elsevierStylePara elsevierViewall">Persistent&#44; atypical erythema multiforme exudativum &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; has been associated with renal cell carcinoma&#44; gastric adenocarcinoma&#44; and extrahepatic cholangiocarcinoma&#46;<a class="elsevierStyleCrossRef" href="#bib0100"><span class="elsevierStyleSup">20</span></a></p></li></ul></p></span></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">Skin Disorders With Inflammatory Papules and Nodules</span><p id="par0095" class="elsevierStylePara elsevierViewall">In this section&#44; we will look at skin disorders that are predominantly characterized by the presence of papules&#44; plaques&#44; and nodules occasionally accompanied by inflammation&#46; Some of these conditions&#44; for instance&#44; necrobiotic xanthogranuloma&#44; multicentric reticulohistiocytosis&#44; and Sweet syndrome&#44; are strongly associated with underlying neoplasms&#46; Others&#44; however&#44; such as erythema nodosum and cutaneous sarcoidosis&#44; are more weakly associated<a class="elsevierStyleCrossRefs" href="#bib0105"><span class="elsevierStyleSup">21&#44;22</span></a> &#40;<a class="elsevierStyleCrossRef" href="#tbl0015">Table 3</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0015"></elsevierMultimedia><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Necrobiotic Xanthogranuloma &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0100" class="elsevierStylePara elsevierViewall">Necrobiotic xanthogranuloma is characterized by multiple yellowish plaques and subcutaneous nodules located in the periorbital region and on the head&#44; the neck&#44; the flexures of the extremities&#44; and the trunk&#46; Ulceration and scarring are common&#46; The condition is associated with benign monoclonal gammopathy in 80&#37; of cases&#46; Associated malignancies include lymphoproliferative diseases&#44; myeloma&#44; chronic lymphoid leukemia&#44; and Hodgkin and non-Hodgkin lymphoma&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;23</span></a></p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Multicentric Reticulohistiocytosis &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0105" class="elsevierStylePara elsevierViewall">Multicentric reticulohistiocytosis starts with skin-colored&#44; pink&#44; or brownish papules measuring between a few millimeters and 2<span class="elsevierStyleHsp" style=""></span>cm in diameter located on the dorsum of the fingers&#44; around the nailfold&#46; They have a characteristic coral-bead appearance&#46; The lesions can subsequently spread to other sites&#44; such as the periorbital region&#44; the elbows&#44; the knees&#44; the feet&#44; and the shoulders&#46; Histologic findings include a histiocytic infiltrate with multinucleated giant cells with an eosinophilic cytoplasm and a ground-glass appearance&#46; Patients also develop destructive symmetric arthritis of the hands and knees&#46; Between 20&#37; and 25&#37; of patients have an associated hematologicl malignancy or breast&#44; stomach&#44; ovarian&#44; or cervical cancer&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;23&#8211;26</span></a></p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0055">Sweet Syndrome or Acute Febrile Neutrophilic Dermatosis &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0110" class="elsevierStylePara elsevierViewall">Sweet syndrome is characterized by the sudden onset of asymmetric skin lesions on the face&#44; the extremities&#44; and the upper part of the trunk&#46; The lesions include multiple erythematous or violaceous papules&#44; indurated plaques&#44; and painful inflammatory nodules that are typically accompanied by fever&#44; neutrophilia&#44; and systemic alterations</p><p id="par0115" class="elsevierStylePara elsevierViewall">Skin biopsy shows a dense neutrophilic infiltrate in the papillary dermis&#44; with a variable degree of edema and absence of vasculitis&#46;</p><p id="par0120" class="elsevierStylePara elsevierViewall">Between 10&#37; and 40&#37; of patients with Sweet syndrome have an associated malignancy&#44; which can precede or arise at the same time as the skin lesions&#46; The most common malignancies are acute myeloid leukemia and other hematological disorders&#46; Solid tumors &#40;genitourinary&#44; breast&#44; lung&#44; and gastrointestinal cancer&#41; are less common&#46; Sweet syndrome is not necessarily associated with malignancy&#44; as it may be idiopathic or induced by other factors such as infectious agents or drugs&#46; There are&#44; however&#44; certain groups of patients in whom it is necessary to rule out an underlying neoplasm&#46; Examples are elderly patients and children without leukocytosis or neutrophilia but with concomitant anemia and thrombopenia&#59; these patients are generally afebrile and have painful lesions on the head&#44; the neck&#44; and the arms&#59; these lesions often take the form of vesicles&#44; pustules&#44; blood-filled blisters&#44; or ulcers&#44; and tend to affect the mucous membranes &#40;<a class="elsevierStyleCrossRef" href="#fig0015">Figs&#46; 3 and 4</a>&#41;&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;27&#8211;31</span></a></p><elsevierMultimedia ident="fig0015"></elsevierMultimedia><p id="par0125" class="elsevierStylePara elsevierViewall">It has been suggested that pyoderma gangrenosum and Sweet syndrome may be part of the same spectrum&#46; In fact&#44; atypical pyoderma gangrenosum &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; which is an ulcerative neutrophilic dermatosis&#44; is more closely associated with hematological malignancies similar to those seen in Sweet syndrome than classical pyoderma gangrenosum&#46; It is characterized by superficial bullous lesions that form ulcers and are typically located on the head and neck&#44; although they can affect other parts of the body &#40;<a class="elsevierStyleCrossRef" href="#fig0020">Figs&#46; 4 and 5</a>&#41;&#46;<a class="elsevierStyleCrossRefs" href="#bib0010"><span class="elsevierStyleSup">2&#44;3&#44;21&#44;29</span></a></p><elsevierMultimedia ident="fig0020"></elsevierMultimedia></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0060">Cutaneous Sarcoidosis &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41;</span><p id="par0130" class="elsevierStylePara elsevierViewall">Cutaneous sarcoidosis has a wide clinical spectrum that includes papules&#44; plaques&#44; nodules&#44; lupus pernio&#44; scar induration&#44; ulceration&#44; alopecia&#44; hypopigmentation&#44; lichenoid or psoriasiform lesions&#44; and more rarely&#44; nail dystrophy or ichthyosiform lesions&#46; Its association with malignancy is attributed to an immune imbalance&#46; The most common associated malignancies are hematological disorders&#44; but a wide variety of solid tumors have also been reported&#46;<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">22</span></a></p><p id="par0135" class="elsevierStylePara elsevierViewall">On rarer occasions&#44; other inflammatory lesions such as erythema nodosum &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; may indicate the presence of Hodgkin lymphoma&#46; These lesions are atypical as they last between 1 and 5 months and do not respond to conventional treatment&#46;<a class="elsevierStyleCrossRef" href="#bib0160"><span class="elsevierStyleSup">32</span></a></p></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Necrotizing Panniculitis or Subcutaneous Fat Necrosis&#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0140" class="elsevierStylePara elsevierViewall">Necrotizing panniculitis&#44; also known as pancreatic panniculitis as it occurs in pancreatic disorders &#40;including cancer of the pancreas&#41;&#44; is caused by the excessive production of pancreatic lipase&#44; an enzyme that induces fat necrosis&#46; It is clinically characterized by the presence of painful erythematous plaques on the buttocks and pretibial regions&#44; although the trunk and the upper limbs may also be affected&#46; The lesions ulcerate&#44; acquiring an abscess-like appearance&#44; and discharge a brownish substance resulting from the liquefaction of subcutaneous fat&#46; Other symptoms&#44; such as fever&#44; arthralgia&#44; and eosinophilia&#44; are also occasionally observed&#46; Patients with necrotizing panniculitis should be evaluated for the presence of acinar cell carcinoma of the pancreas&#46;<a class="elsevierStyleCrossRef" href="#bib0165"><span class="elsevierStyleSup">33</span></a></p></span></span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Xerosis&#44; Ichthyosis&#44; Exfoliative Dermatitis &#40;Erythroderma&#41;</span><p id="par0145" class="elsevierStylePara elsevierViewall">Xerosis is a common sign that can be constitutional or form part of atopic dermatitis&#46; It may occasionally indicate the presence of an underlying malignancy &#40;<a class="elsevierStyleCrossRef" href="#tbl0020">Table 4</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0020"></elsevierMultimedia><p id="par0150" class="elsevierStylePara elsevierViewall">Xerosis is common in elderly patients&#44; in whom it typically affects the pretibial region of the lower legs&#59; its severe form is known as eczema craquel&#233; or asteatotic eczema &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41;&#46; Patients with hormonal disorders and malnutrition are particularly prone to this extreme form of dry skin&#46;</p><p id="par0155" class="elsevierStylePara elsevierViewall">Eczema craquel&#233; has been described in association with lymphomas&#44; gastric adenocarcinoma&#44; glucagonoma&#44; and adenocarcinoma of the pancreas&#46;<a class="elsevierStyleCrossRef" href="#bib0170"><span class="elsevierStyleSup">34</span></a> When the lesions acquire a more inflammatory appearance&#44; are more evident on the trunks and upper legs&#44; and furthermore are refractory to treatment with topical corticosteroids&#44; it is advisable to examine lymph nodes&#44; check for hepatosplenomegaly&#44; and perform blood tests&#44; a chest radiograph&#44; and an abdominal ultrasound to rule out the presence of neoplastic disease&#46;<a class="elsevierStyleCrossRefs" href="#bib0175"><span class="elsevierStyleSup">35&#44;36</span></a></p><p id="par0160" class="elsevierStylePara elsevierViewall">Ichthyosis acquisita &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; is a more severe form of eczema craquel&#233; characterized by small white or brownish rhomboid scales on the extensor surfaces of the extremities and on the trunk&#46; The palms&#44; soles&#44; and flexures are spared &#40;<a class="elsevierStyleCrossRef" href="#fig0025">Figs&#46; 5 and 6</a>&#41;&#46; Ichthyosis acquisita is mostly seen in association with Hodgkin lymphoma&#44; but it can also occur in association with other lymphoproliferative diseases &#40;e&#46;g&#46;&#44; mycosis fungoides&#44; reticulolymphosarcoma&#44; multiple myeloma&#41; and nonlymphoproliferative diseases &#40;ovarian dysgerminoma&#44; leiomyosarcoma&#44; transitional cell cancer of the kidney&#44; hepatocellular carcinoma&#44; breast cancer&#44; and Kaposi sarcoma&#41;&#46; One characteristic feature of ichthyosis acquisita is that it typically appears several weeks or months after diagnosis of the tumor&#46; Its pathogenesis is attributed to reduced synthesis of lipids or to an abnormal immune response&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;37&#8211;39</span></a></p><elsevierMultimedia ident="fig0025"></elsevierMultimedia><p id="par0165" class="elsevierStylePara elsevierViewall">Finally&#44; several patients develop&#44; either initially or at a later stage&#44; generalized exfoliative dermatitis &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; with an erythrodermal appearance and severe scaling&#46; They frequently also have alopecia&#44; nail dystrophy&#44; generalized lymphadenopathy&#44; hypothermia&#44; hypoalbuminemia&#44; and heart failure&#46; In most cases&#44; the condition is associated with direct invasion by a cutaneous T-cell lymphoma&#44; but&#44; more rarely&#44; it can occur in association with other lymphomas or with leukemias or solid tumors&#46;<a class="elsevierStyleCrossRefs" href="#bib0160"><span class="elsevierStyleSup">32&#44;40</span></a></p></span><span id="sec0055" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Pruritus and Prurigo &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0170" class="elsevierStylePara elsevierViewall">Pruritus is a common dermatologic symptom with many causes&#46; In the case of generalized dermatitis&#44; it is important to consider the possibility of an underlying malignancy once the usual benign diseases have been ruled out&#46; Generalized pruritus can be a nonspecific sign of malignancy&#46; It has a complex pathogenesis in which T cell-dysregulation and the production of mediators such as histamine and serotonin by certain tumors has been implicated&#46;<a class="elsevierStyleCrossRefs" href="#bib0010"><span class="elsevierStyleSup">2&#44;23</span></a></p><p id="par0175" class="elsevierStylePara elsevierViewall">The most common malignancy associated with generalized pruritus is Hodgkin lymphoma&#59; this skin condition is observed in over 25&#37; of patients with this cancer and is refractory to conventional treatments&#46;<a class="elsevierStyleCrossRef" href="#bib0160"><span class="elsevierStyleSup">32</span></a> It may also occur in breast cancer&#44; carcinoid syndrome&#44; cutaneous T-cell lymphoma&#44; and gastrointestinal and hepatocellular carcinomas&#46;<a class="elsevierStyleCrossRef" href="#bib0205"><span class="elsevierStyleSup">41</span></a></p><p id="par0180" class="elsevierStylePara elsevierViewall">Patients with severe generalized pruritus may have scratch lesions and excoriated papules &#40;prurigo&#41; in accessible areas&#44; namely&#44; the upper third of the back and the arms and legs&#46;<a class="elsevierStyleCrossRefs" href="#bib0115"><span class="elsevierStyleSup">23&#44;42</span></a></p><p id="par0185" class="elsevierStylePara elsevierViewall">Localized pruritus is very rarely a sign of an underlying malignancy&#46; One example is nasal pruritus&#44; which is a poor prognostic factor in patients with brain tumors&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a></p></span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Hirsutism and Hypertrichosis</span><p id="par0190" class="elsevierStylePara elsevierViewall">Hypertrichosis refers to the growth of hair in an excessive amount or thickness on any part of the body&#44; while hirsutism refers to the excessive growth of body or facial hair with male characteristics and a male distribution pattern in women &#40;<a class="elsevierStyleCrossRef" href="#tbl0025">Table 5</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0025"></elsevierMultimedia><p id="par0195" class="elsevierStylePara elsevierViewall">Hirsutism &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; can be caused by the excessive production of hormones by the adrenal or pituitary glands&#44; but it can also be idiopathic&#46; Abrupt onset sometimes suggests the presence of an androgen-producing tumor &#40;typically ovarian&#41; and is accompanied by hormone changes and other signs of virilization&#46;<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">7</span></a></p><p id="par0200" class="elsevierStylePara elsevierViewall">Acquired hypertrichosis lanuginosa is a rare but typically paraneoplastic condition &#40;<span class="elsevierStyleSup">&#42;</span>&#41; characterized by the sudden appearance of fine&#44; unpigmented hair on the face &#40;<a class="elsevierStyleCrossRef" href="#fig0030">Figs&#46; 6 and 7</a>&#41; and then on the trunk&#44; the axillae&#44; and the extremities&#44; with sparing of the palms&#44; soles&#44; and genital area&#46; In women&#44; there are no other signs of virilization&#46; It is strongly paraneoplastic and is more common in women than in men&#46; Accompanying symptoms may include painful glossitis&#44; angular cheilitis&#44; and papillary hypertrophy of the tongue&#46;</p><elsevierMultimedia ident="fig0030"></elsevierMultimedia><p id="par0205" class="elsevierStylePara elsevierViewall">In men&#44; acquired hypertrichosis lanuginosa is most commonly associated with lung cancer&#44; followed by colorectal cancer&#46; In women&#44; the most common neoplasms are&#44; in order of frequency&#44; colorectal cancer&#44; lung cancer&#44; and breast cancer&#46; However&#44; the condition has also been described in association with cancers of the ovary&#44; uterus&#44; bladder&#44; pancreas&#44; and kidney&#44; as well as with lymphomas and leukemia&#46; It can precede or follow the diagnosis of the tumor&#44; and is usually a sign of poor prognosis&#46;<a class="elsevierStyleCrossRefs" href="#bib0115"><span class="elsevierStyleSup">23&#44;29&#44;43&#44;44</span></a></p></span><span id="sec0065" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Hyperhidrosis and Anhidrosis &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41;</span><p id="par0210" class="elsevierStylePara elsevierViewall">Hyperhidrosis has multiple causes and on rare occasions can indicate the presence of an underlying tumor &#40;<a class="elsevierStyleCrossRef" href="#tbl0030">Table 6</a>&#41;&#46;<ul class="elsevierStyleList" id="lis0010"><li class="elsevierStyleListItem" id="lsti0040"><span class="elsevierStyleLabel">1&#46;</span><p id="par0215" class="elsevierStylePara elsevierViewall">Generalized hyperhidrosis is observed in pheochromocytoma&#44; carcinoid tumors&#44; Hodgkin lymphoma &#40;night sweating&#41;&#44; and tumors of the cerebral cortex&#46;</p></li><li class="elsevierStyleListItem" id="lsti0045"><span class="elsevierStyleLabel">2&#46;</span><p id="par0220" class="elsevierStylePara elsevierViewall">Localized craniofacial hyperhidrosis occurs in situations of minimum stress&#46; When it affects a single cheek and is triggered by the ingestion of certain foods and accompanied by salivation&#44; it is known as Frey syndrome&#44; which results from damage to the parasympathetic fibers in the auriculotemporal nerve&#46; Also known as gustatory sweating&#44; it occurs in parotid disorders&#44; which may be neoplastic&#46;<a class="elsevierStyleCrossRefs" href="#bib0225"><span class="elsevierStyleSup">45&#44;46</span></a></p></li><li class="elsevierStyleListItem" id="lsti0050"><span class="elsevierStyleLabel">3&#46;</span><p id="par0225" class="elsevierStylePara elsevierViewall">Segmental hyperhidrosis is caused by intrathoracic neoplasms that alter the trunk of the sympathetic nerve &#40;lymphomas&#44; mesotheliomas&#44; Pancoast tumor&#44; contralateral lung cancer&#44; or superior mediastinal neurinoma<a class="elsevierStyleCrossRef" href="#bib0235"><span class="elsevierStyleSup">47</span></a>&#41;&#46; The condition is also known as Harlequin syndrome and is characterized by asymmetric flushing and unilateral sweating induced by heat and exercise&#46; It can also be idiopathic&#46;</p></li><li class="elsevierStyleListItem" id="lsti0055"><span class="elsevierStyleLabel">4&#46;</span><p id="par0230" class="elsevierStylePara elsevierViewall">Anhidrosis occurs in neurogenic tumors that affect the central nervous system at the level of the hypothalamus or the spinal cord&#59; it can also occur in association with segmental hyperhidrosis&#46;</p></li></ul></p><elsevierMultimedia ident="tbl0030"></elsevierMultimedia></span><span id="sec0070" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Cutaneous Tumors</span><p id="par0235" class="elsevierStylePara elsevierViewall">Certain benign and malignant tumors are not indicative of malignancy on their own&#44; but they commonly form part of complex syndromes&#44; including certain genodermatoses&#44; that are associated with a higher incidence of neoplasms&#46;<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">6</span></a> Familiarity with these syndromes is key to early diagnosis and treatment and consequently improved survival &#40;<a class="elsevierStyleCrossRef" href="#tbl0035">Table 7</a>&#41;&#46;<ul class="elsevierStyleList" id="lis0015"><li class="elsevierStyleListItem" id="lsti0060"><span class="elsevierStyleLabel">1&#46;</span><p id="par0240" class="elsevierStylePara elsevierViewall">Seborrheic keratoses are very common in elderly patients&#44; but a sudden eruption or increase in the number and size of lesions&#44; accompanied by intense itching&#44; may be indicative of malignancy&#46; This phenomenon is known as the sign of Leser-Tr&#233;lat &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#46; The paraneoplastic nature of these lesions&#44; however&#44; has long been the subject of debate as seborrheic keratoses and neoplasms are relatively common in elderly individuals&#46; The sign of Leser-Tr&#233;lat &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; has been linked to malignant acanthosis nigricans as they sometimes occur together&#46;<a class="elsevierStyleCrossRef" href="#bib0240"><span class="elsevierStyleSup">48</span></a> In such cases&#44; the lesions are most often located on the back and can follow a Christmas tree&#8211;like pattern&#46; Pruritus is an important symptom&#46; The sign of Leser-Tr&#233;lat has been associated with gastrointestinal adenocarcinomas and lymphoproliferative diseases&#44; and&#44; less commonly&#44; with lung&#44; bladder&#44; renal&#44; ovarian&#44; and breast cancer&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;23&#44;31&#44;49</span></a></p></li><li class="elsevierStyleListItem" id="lsti0065"><span class="elsevierStyleLabel">2&#46;</span><p id="par0245" class="elsevierStylePara elsevierViewall">A similar condition&#44; dermatosis papulosa nigra &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; affects black individuals and has occasionally been linked to malignancy&#46;<a class="elsevierStyleCrossRef" href="#bib0250"><span class="elsevierStyleSup">50</span></a></p></li><li class="elsevierStyleListItem" id="lsti0070"><span class="elsevierStyleLabel">3&#46;</span><p id="par0250" class="elsevierStylePara elsevierViewall">Cutaneous florid papillomatosis &#40;<span class="elsevierStyleSup">&#42;</span>&#41; consists of the development of multiple wartlike lesions on the trunk&#44; face&#44; and extremities&#46; With an identical appearance to that of viral warts&#44; these lesions multiply rapidly and become confluent&#44; occasionally causing unsightly growths and disfigurement of the hands and feet&#46; It is a paraneoplastic disorder that in the opinion of some authors is a clinical variant of malignant acanthosis nigricans&#46;<a class="elsevierStyleCrossRef" href="#bib0185"><span class="elsevierStyleSup">37</span></a> It has been described in association with gastric&#44; breast&#44; lung&#44; and ovarian cancer&#46;<a class="elsevierStyleCrossRefs" href="#bib0255"><span class="elsevierStyleSup">51&#8211;54</span></a></p></li><li class="elsevierStyleListItem" id="lsti0075"><span class="elsevierStyleLabel">4&#46;</span><p id="par0255" class="elsevierStylePara elsevierViewall">Multiple sebaceous gland tumors &#40;sebaceous adenomas and carcinomas&#41; located on the trunk are part of Muir-Torre syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; which runs in families and is associated with carcinomas of the gastrointestinal tract&#46; When there is a single tumor located on the head or neck&#44; it is not usually indicative of malignancy&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0080"><span class="elsevierStyleLabel">5&#46;</span><p id="par0260" class="elsevierStylePara elsevierViewall">The coexistence of trichilemmomas&#44; lipomas&#44; and angiomas suggests a diagnosis of Cowden disease &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; &#40;multiple hamartoma syndrome&#41;&#44; a hereditary disorder associated with an increased risk of breast&#44; thyroid&#44; endometrial&#44; lung&#44; and colon cancer&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0085"><span class="elsevierStyleLabel">6&#46;</span><p id="par0265" class="elsevierStylePara elsevierViewall">Gardner syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; which is characterized by the occurrence of large&#44; multiple epidermal cysts&#44; fibromas&#44; leiomyomas&#44; trichoepitheliomas&#44; and neurofibromas&#44; is an autosomal dominant condition that can occur in association with colon cancer&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0090"><span class="elsevierStyleLabel">7&#46;</span><p id="par0270" class="elsevierStylePara elsevierViewall">Fibrofolliculomas and trichodiscomas are seen in Birt-Hogg-Dub&#233; syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; an autosomal dominant disorder associated with an increased risk of lung and renal cell carcinoma&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0095"><span class="elsevierStyleLabel">8&#46;</span><p id="par0275" class="elsevierStylePara elsevierViewall">Multiple leiomyomas in a bandlike or segmental distribution &#40;<a class="elsevierStyleCrossRef" href="#fig0035">Figs&#46; 7 and 8</a>&#41; may be associated with renal cell tumors&#44; forming part of a syndrome known as hereditary leiomyomatosis and renal cell cancer &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p><elsevierMultimedia ident="fig0035"></elsevierMultimedia></li><li class="elsevierStyleListItem" id="lsti0100"><span class="elsevierStyleLabel">9&#46;</span><p id="par0280" class="elsevierStylePara elsevierViewall">Familial atypical multiple mole melanoma &#40;FAMMM&#41; syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;&#42;</span>&#41; is a relatively unknown genetic disorder associated with a high risk of melanoma and pancreatic cancer&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0105"><span class="elsevierStyleLabel">10&#46;</span><p id="par0285" class="elsevierStylePara elsevierViewall">Multiple mucosal neuroma syndrome &#40;multiple endocrine neoplasia syndrome&#41; &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; is characterized by the development of multiple neuromas of the lips&#44; the tongue&#44; the lip mucosa&#44; and the gums&#46; It is an autosomal dominant condition associated with a higher incidence of pheochromocytoma and medullary carcinoma of the thyroid&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a></p></li><li class="elsevierStyleListItem" id="lsti0110"><span class="elsevierStyleLabel">11&#46;</span><p id="par0290" class="elsevierStylePara elsevierViewall">Neurofibromatosis type I &#40;von Recklinghausen disease&#41; &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; is an autosomal dominant neurocutaneous syndrome with freckling in the axillary and groin regions&#44; caf&#233; au lait spots&#44; neurofibromas&#44; and on occasions&#44; plexiform neurofibromas &#40;<a class="elsevierStyleCrossRef" href="#fig0040">Figs&#46; 8 and 9</a>&#41;&#46; It can be complicated by the malignant transformation of plexiform neurofibromas&#46; As the disease evolves&#44; patients can develop certain malignancies&#44; such as Wilms tumor&#44; rhabdomyosarcoma&#44; retinoblastoma&#44; melanoma&#44; intestinal leiomyosarcoma&#44; medulloblastoma&#44; and leukemia&#46; Pheochromocytomas are benign in 90&#37; of cases&#46; There have also been reports of familial early-onset breast cancer and other gynecological tumors&#46;<a class="elsevierStyleCrossRefs" href="#bib0010"><span class="elsevierStyleSup">2&#44;29</span></a></p><elsevierMultimedia ident="fig0040"></elsevierMultimedia></li><li class="elsevierStyleListItem" id="lsti0115"><span class="elsevierStyleLabel">12&#46;</span><p id="par0295" class="elsevierStylePara elsevierViewall">Tuberous sclerosis &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; is an autosomal dominant condition that causes the growth of hamartomas on the skin&#44; the brain&#44; the kidney&#44; and the heart&#46; Characteristic skin lesions include facial angiofibromas &#40;<a class="elsevierStyleCrossRef" href="#fig0045">Figs&#46; 9 and 10</a>&#41;&#44; periungual fibromas &#40;Koenen tumors&#41; &#40;<a class="elsevierStyleCrossRef" href="#fig0050">Figs&#46; 10 and 11</a>&#41;&#44; shagreen patches&#44; and hypopigmented ash-leaf macules&#46; The most common tumors in patients with tuberous sclerosis are cerebral astrocytomas&#44; followed by clear cell renal cell carcinomas&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a></p><elsevierMultimedia ident="fig0045"></elsevierMultimedia><elsevierMultimedia ident="fig0050"></elsevierMultimedia></li><li class="elsevierStyleListItem" id="lsti0120"><span class="elsevierStyleLabel">13&#46;</span><p id="par0300" class="elsevierStylePara elsevierViewall">Gorlin syndrome&#44; also known as nevoid basal cell carcinoma syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;&#44; is an autosomal dominant condition consisting of multiple basal cell carcinomas&#44; jaw cysts&#44; palmoplantar pits&#44; and bone anomalies&#44; among other features &#40;<a class="elsevierStyleCrossRef" href="#fig0055">Figs&#46; 12 and 13</a>&#41;&#46; Patients with this syndrome may also develop other malignancies such as medulloblastomas&#44; oligodendrogliomas&#44; ovarian fibrosarcoma&#44; and Hodgkin and non-Hodgkin lymphoma&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a></p><elsevierMultimedia ident="fig0055"></elsevierMultimedia></li></ul></p><elsevierMultimedia ident="tbl0035"></elsevierMultimedia></span><span id="sec0075" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Mouth Changes</span><p id="par0305" class="elsevierStylePara elsevierViewall">The mouth is the site of many manifestations related to several paraneoplastic signs that have already been discussed &#40;<a class="elsevierStyleCrossRef" href="#tbl0040">Table 8</a>&#41;&#46; These include macroglossia &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; in systemic amyloidosis and myeloma&#59; glossitis &#40;<span class="elsevierStyleSup">&#42;</span>&#41; in migratory necrolytic erythema and acquired hypertrichosis lanuginosa&#59; erosive lesions in paraneoplastic pemphigus &#40;<span class="elsevierStyleSup">&#42;</span>&#41;&#59; wartlike growths and papillomatosis on the tongue and lips &#40;<span class="elsevierStyleSup">&#42;</span>&#41; in malignant nigricans acanthosis and cutaneous florid papillomatosis<a class="elsevierStyleCrossRef" href="#bib0255"><span class="elsevierStyleSup">51</span></a>&#59; and mouth ulcers &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41; in Sweet syndrome&#46;<a class="elsevierStyleCrossRef" href="#bib0275"><span class="elsevierStyleSup">55</span></a> Oral leukoplakia in dyskeratosis congenita<a class="elsevierStyleCrossRef" href="#bib0280"><span class="elsevierStyleSup">56</span></a> and pachyonychia congenita<a class="elsevierStyleCrossRef" href="#bib0285"><span class="elsevierStyleSup">57</span></a> will be discussed in the following section on nail changes as these are the main manifestations of these conditions&#46;</p><elsevierMultimedia ident="tbl0040"></elsevierMultimedia></span><span id="sec0080" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">Nail Changes</span><p id="par0310" class="elsevierStylePara elsevierViewall">Nail changes in isolation do not tend to have much relevance in systemic malignancies&#44; but nail dystrophy is a symptom of numerous paraneoplastic conditions&#44; some of which have already been discussed in the first part of this review&#46; These conditions include acrokeratosis paraneoplastica of Bazex &#40;horizontal or longitudinal ridges and total nail dystrophy&#41;&#59; pachydermoperiostosis or hypertrophic osteoarthropathy &#40;acropathy&#41;&#59; paraneoplastic pemphigus &#40;paronychia and lichenoid nail dystrophy&#41;&#59; tuberous sclerosis &#40;Koenen tumors&#41;&#59; and&#44; probably other conditions with late onset of nail changes&#44; including carcinoid syndrome&#44; erythema gyratum repens&#44; and generalized exfoliative dermatitis&#46;</p><p id="par0315" class="elsevierStylePara elsevierViewall">In certain syndromes&#44; however&#44; nail dystrophy is a key sign indicating the possible presence of an underlying neoplasm&#46; The most relevant of these syndromes are listed in <a class="elsevierStyleCrossRef" href="#tbl0045">Table 9</a>&#46;</p><elsevierMultimedia ident="tbl0045"></elsevierMultimedia><span id="sec0085" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0105">Yellow Nail Syndrome &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0320" class="elsevierStylePara elsevierViewall">Yellow nail syndrome is a rare condition of unknown etiology&#44; although it is known that hypoplasia of the lymphatic system plays an important role&#46; There have also been occasional reports of the syndrome affecting members of the same family&#46; Yellow nail syndrome is characterized by thick&#44; overcurved greenish nails with loss of cuticle and on occasions the presence of onycholysis &#40;<a class="elsevierStyleCrossRefs" href="#fig0060">Figs&#46; 13 and 14</a>&#41;&#46; Nail growth cessation is not uncommon&#46; The changes can occur alone or in association with a systemic disorder&#44; and it is therefore advisable to rule out respiratory diseases&#44; primary lymphedema&#44; autoimmune diseases such as rheumatoid arthritis&#44; and malignant tumors such as breast cancer and lymphomas&#46;<a class="elsevierStyleCrossRefs" href="#bib0290"><span class="elsevierStyleSup">58&#44;59</span></a></p><elsevierMultimedia ident="fig0060"></elsevierMultimedia><elsevierMultimedia ident="fig0065"></elsevierMultimedia></span><span id="sec0090" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0110">Dyskeratosis Congenita &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0325" class="elsevierStylePara elsevierViewall">Dyskeratosis congenita is a multisystemic X-linked recessive disorder characterized by the triad of nail changes&#44; reticulated hyperpigmentation&#44; and leukoplakia of any of the mucous membranes&#44; although the oral mucosa is the most frequently affected&#46;</p><p id="par0330" class="elsevierStylePara elsevierViewall">Nail changes occur early on in the disease&#46; The nails are initially fragile and uneven&#46; They remain small and can even be absent or barely noticeable&#46; The changes first affect the fingernails and then the toenails&#46;</p><p id="par0335" class="elsevierStylePara elsevierViewall">Patients with dyskeratosis congenita have a high risk of aplastic anemia&#44; myelodysplastic syndrome&#44; leukemia&#44; and solid tumors&#46; Leukoplakia&#44; in turn&#44; is associated with a higher incidence of squamous cell carcinoma of the mouth&#44; the rectum&#44; the cervix&#44; the vagina&#44; the esophagus&#44; and the skin&#46;<a class="elsevierStyleCrossRef" href="#bib0280"><span class="elsevierStyleSup">56</span></a></p></span><span id="sec0095" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0115">Pachyonychia Congenita &#40;<span class="elsevierStyleSup">&#42;&#42;</span>&#41;</span><p id="par0340" class="elsevierStylePara elsevierViewall">Pachyonychia congenita refers to a group of ectodermal dysplasias with an autosomal dominant pattern of inheritance&#46; There are 2 main types&#58; pachyonychia congenita type 1 &#40;Jadassohn-Lewandowsky&#41; and pachyonychia congenita type 2 &#40;Jakson-Lawler&#41;&#46; Type 1 is characterized by palmoplantar keratoderma&#44; follicular keratosis of the knees and elbows&#44; and oral leukokeratosis and requires close follow-up to check for the development of squamous cell carcinoma&#46; Pachyonychia congenita type 2&#44; in turn&#44; is characterized by steatocystoma multiplex and vellus hair cysts&#44; in addition to many other alterations&#46;</p><p id="par0345" class="elsevierStylePara elsevierViewall">Both types are characterized by considerable thickening of the nails due to subungual hyperkeratosis in the distal portion&#46; The nails acquire a yellow-grayish color and have transverse overcurvature&#46; Nail dystrophy develops during childhood&#46;<a class="elsevierStyleCrossRef" href="#bib0285"><span class="elsevierStyleSup">57</span></a></p></span></span><span id="sec0100" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0120">Conflicts of Interest</span><p id="par0350" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest&#46;</p></span></span>"
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        0 => array:2 [
          "identificador" => "xres261449"
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          "titulo" => "Keywords"
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        2 => array:2 [
          "identificador" => "xres261448"
          "titulo" => "Resumen"
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          "titulo" => "Palabras clave"
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        4 => array:2 [
          "identificador" => "sec0005"
          "titulo" => "Introduction"
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        5 => array:3 [
          "identificador" => "sec0010"
          "titulo" => "Erosive and Bullous Lesions"
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            0 => array:2 [
              "identificador" => "sec0015"
              "titulo" => "Paraneoplastic Pemphigus &#40;&#41;"
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          ]
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        6 => array:3 [
          "identificador" => "sec0020"
          "titulo" => "Skin Disorders With Inflammatory Papules and Nodules"
          "secciones" => array:5 [
            0 => array:2 [
              "identificador" => "sec0025"
              "titulo" => "Necrobiotic Xanthogranuloma &#40;&#41;"
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            1 => array:2 [
              "identificador" => "sec0030"
              "titulo" => "Multicentric Reticulohistiocytosis &#40;&#41;"
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            2 => array:2 [
              "identificador" => "sec0035"
              "titulo" => "Sweet Syndrome or Acute Febrile Neutrophilic Dermatosis &#40;&#41;"
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            3 => array:2 [
              "identificador" => "sec0040"
              "titulo" => "Cutaneous Sarcoidosis &#40;&#41;"
            ]
            4 => array:2 [
              "identificador" => "sec0045"
              "titulo" => "Necrotizing Panniculitis or Subcutaneous Fat Necrosis&#40;&#41;"
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        ]
        7 => array:2 [
          "identificador" => "sec0050"
          "titulo" => "Xerosis&#44; Ichthyosis&#44; Exfoliative Dermatitis &#40;Erythroderma&#41;"
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        8 => array:2 [
          "identificador" => "sec0055"
          "titulo" => "Pruritus and Prurigo &#40;&#41;"
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        9 => array:2 [
          "identificador" => "sec0060"
          "titulo" => "Hirsutism and Hypertrichosis"
        ]
        10 => array:2 [
          "identificador" => "sec0065"
          "titulo" => "Hyperhidrosis and Anhidrosis &#40;&#41;"
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        11 => array:2 [
          "identificador" => "sec0070"
          "titulo" => "Cutaneous Tumors"
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        12 => array:2 [
          "identificador" => "sec0075"
          "titulo" => "Mouth Changes"
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          "titulo" => "Nail Changes"
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            0 => array:2 [
              "identificador" => "sec0085"
              "titulo" => "Yellow Nail Syndrome &#40;&#41;"
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            1 => array:2 [
              "identificador" => "sec0090"
              "titulo" => "Dyskeratosis Congenita &#40;&#41;"
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            2 => array:2 [
              "identificador" => "sec0095"
              "titulo" => "Pachyonychia Congenita &#40;&#41;"
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        14 => array:2 [
          "identificador" => "sec0100"
          "titulo" => "Conflicts of Interest"
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        15 => array:1 [
          "titulo" => "References"
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    "fechaRecibido" => "2012-05-07"
    "fechaAceptado" => "2012-05-07"
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            0 => "Cutaneous manifestations"
            1 => "Neoplasm"
            2 => "Cutaneous paraneoplastic syndrome"
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            0 => "Alertas cut&#225;neas"
            1 => "Neoplasia"
            2 => "S&#237;ndromes paraneopl&#225;sicos cut&#225;neos"
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        "titulo" => "Abstract"
        "resumen" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">The skin can be key to early diagnosis of systemic malignancies&#46; In the second part of this review&#44; we present various skin conditions that can&#44; in certain contexts&#44; reveal the presence of malignancy&#46; The skin conditions are presented in groups based on a diverse range of morphological characteristics&#46; Specifically&#44; the following groups are analyzed&#58; erosive and blistering lesions&#59; inflammatory papules and nodules&#59; xerosis&#44; ichthyosis&#44; and generalized exfoliative dermatitis&#59; symptoms such as pruritus&#59; abnormal hair distribution patterns&#59; sweating disorders&#59; benign tumors that can form part of hereditary syndromes associated with a risk of visceral cancer&#59; and finally&#44; oral and nail abnormalities&#46;</p><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">This review highlights the importance of the skin in the study of systemic malignancies&#46;</p>"
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        "resumen" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">La piel puede ser &#8220;clave&#8221; en el diagn&#243;stico precoz de neoplasias sist&#233;micas&#46; En esta segunda parte se abordan una serie de dermatosis agrupadas por sus caracter&#237;sticas morfol&#243;gicas&#44; muy diversas&#44; que en un contexto apropiado contribuyen a desenmascarar procesos malignos&#46; Se analizan las lesiones erosivas y ampollares&#44; las p&#225;pulas y n&#243;dulos inflamatorios&#44; la xerosis&#44; ictiosis&#44; dermatitis exfoliativa generalizada&#44; s&#237;ntomas como el prurito&#44; alteraciones de la distribuci&#243;n del pelo&#44; trastornos de la sudoraci&#243;n&#44; tumores benignos que pueden formar parte de s&#237;ndromes heredofamiliares en cuya evoluci&#243;n se puede desarrollar c&#225;ncer visceral&#46; Por &#250;ltimo se describen las lesiones ungueales y bucales en relaci&#243;n con malignidad sist&#233;mica&#46;</p><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">En definitiva&#44; se destaca la importancia de la piel en el estudio de las neoplasias sist&#233;micas&#46;</p>"
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        "nota" => "<p class="elsevierStyleNotepara" id="npar0080">Please cite this article as&#58; Yuste Chaves M&#44; Unamuno P&#233;rez P&#46; Alertas cut&#225;neas en malignidades sist&#233;micas &#40;parte 2&#41;&#46; Actas Dermosifiliogr&#46; 2013&#59;104&#58;543&#8211;53&#46;</p>"
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        "identificador" => "fig0065"
        "etiqueta" => "Figure 14"
        "tipo" => "MULTIMEDIAFIGURA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "figura" => array:1 [
          0 => array:4 [
            "imagen" => "gr14.jpeg"
            "Alto" => 1532
            "Ancho" => 1583
            "Tamanyo" => 261176
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0085" class="elsevierStyleSimplePara elsevierViewall">Yellow nail syndrome&#46;</p>"
        ]
      ]
      13 => array:7 [
        "identificador" => "tbl0005"
        "etiqueta" => "Table 1"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:1 [
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Facial reddening&#44; swelling&#44; and flushing&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Hyperpigmentation&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Annular lesions&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Erythematosquamous and hyperkeratotic lesions&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Skin thickening and hardening&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Vascular lesions&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Erosive and bullous lesions&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Inflammatory papules and nodules&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Xerosis&#44; ichthyosis exfoliative dermatitis &#40;erythroderma&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Pruritus and prurigo&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Hirsutism and hypertrichosis&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Hyperhidrosis and anhidrosis&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Cutaneous tumors&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Mouth changes&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Nail changes&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
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                0 => "xTab367477.png"
              ]
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0090" class="elsevierStyleSimplePara elsevierViewall">Possible Cutaneous Signs of Internal Malignancies&#46;</p>"
        ]
      ]
      14 => array:7 [
        "identificador" => "tbl0010"
        "etiqueta" => "Table 2"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:2 [
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Paraneoplastic pemphigus<a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Other erosive-bullous diseases&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Bullous pemphigoid<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Cicatricial pemphigoid<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Dermatitis herpetiformis<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Linear immunoglobulin A bullous dermatosis<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Epidermolysis bullosa acquisita<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Pemphigus foliaceus<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Exudative erythema multiforme<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
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                0 => "xTab367478.png"
              ]
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              "identificador" => "tblfn0005"
              "etiqueta" => "&#42;"
              "nota" => "<p class="elsevierStyleNotepara" id="npar0005">True paraneoplastic condition&#46;</p>"
            ]
            1 => array:3 [
              "identificador" => "tblfn0010"
              "etiqueta" => "&#42;&#42;&#42;"
              "nota" => "<p class="elsevierStyleNotepara" id="npar0010">Condition exceptionally associated with an internal malignancy&#46;</p>"
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        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0095" class="elsevierStyleSimplePara elsevierViewall">Skin Disorders With Erosive and Bullous Lesions Potentially Associated With an Internal Malignancy&#46;</p>"
        ]
      ]
      15 => array:7 [
        "identificador" => "tbl0015"
        "etiqueta" => "Table 3"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:2 [
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Necrobiotic xanthogranuloma<a class="elsevierStyleCrossRef" href="#tblfn0015"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Multicentric reticulohistiocytosis<a class="elsevierStyleCrossRef" href="#tblfn0015"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Sweet syndrome<a class="elsevierStyleCrossRef" href="#tblfn0015"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Pyoderma gangrenosum<a class="elsevierStyleCrossRef" href="#tblfn0015"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Cutaneous sarcoidosis<a class="elsevierStyleCrossRef" href="#tblfn0020"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Erythema nodosum<a class="elsevierStyleCrossRef" href="#tblfn0020"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Necrotizing panniculitis&#44; or subcutaneous fat necrosis<a class="elsevierStyleCrossRef" href="#tblfn0015"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
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                0 => "xTab367483.png"
              ]
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              "identificador" => "tblfn0015"
              "etiqueta" => "&#42;&#42;"
              "nota" => "<p class="elsevierStyleNotepara" id="npar0015">Condition occasionally associated with an internal malignancy&#46;</p>"
            ]
            1 => array:3 [
              "identificador" => "tblfn0020"
              "etiqueta" => "&#42;&#42;&#42;"
              "nota" => "<p class="elsevierStyleNotepara" id="npar0020">Condition exceptionally associated with an internal malignancy&#46;</p>"
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        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0100" class="elsevierStyleSimplePara elsevierViewall">Skin disorders With Inflammatory Papules and Nodules Potentially Associated With an Internal Malignancy&#46;</p>"
        ]
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      16 => array:7 [
        "identificador" => "tbl0020"
        "etiqueta" => "Table 4"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:2 [
          "tablatextoimagen" => array:1 [
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                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Eczema craquel&#233; or asteatotic eczema<a class="elsevierStyleCrossRef" href="#tblfn0030"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Ichthyosis acquisita<a class="elsevierStyleCrossRef" href="#tblfn0025"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Generalized exfoliative dermatitis &#40;erythroderma&#41;<a class="elsevierStyleCrossRef" href="#tblfn0025"><span class="elsevierStyleSup">&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
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                0 => "xTab367482.png"
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            ]
            1 => array:3 [
              "identificador" => "tblfn0030"
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              "nota" => "<p class="elsevierStyleNotepara" id="npar0030">Condition exceptionally associated with an internal malignancy&#46;</p>"
            ]
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        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0105" class="elsevierStyleSimplePara elsevierViewall">Conditions With Dry Skin Potentially Associated With an Internal Malignancy&#46;</p>"
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        "identificador" => "tbl0025"
        "etiqueta" => "Table 5"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:2 [
          "tablatextoimagen" => array:1 [
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                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Hirsutism<a class="elsevierStyleCrossRef" href="#tblfn0040"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Acquired hypertrichosis lanuginosa<a class="elsevierStyleCrossRef" href="#tblfn0035"><span class="elsevierStyleSup">&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
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                0 => "xTab367480.png"
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              "nota" => "<p class="elsevierStyleNotepara" id="npar0035">True paraneoplastic condition&#46;</p>"
            ]
            1 => array:3 [
              "identificador" => "tblfn0040"
              "etiqueta" => "&#42;&#42;&#42;"
              "nota" => "<p class="elsevierStyleNotepara" id="npar0040">Condition exceptionally associated with an internal malignancy&#46;</p>"
            ]
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        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0110" class="elsevierStyleSimplePara elsevierViewall">Hair Growth Disorders Potentially Associated With an Internal Malignancy&#46;</p>"
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      18 => array:7 [
        "identificador" => "tbl0030"
        "etiqueta" => "Table 6"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
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        "tabla" => array:2 [
          "tablatextoimagen" => array:1 [
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                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Generalized hyperhidrosis<a class="elsevierStyleCrossRef" href="#tblfn0045"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Frey syndrome<a class="elsevierStyleCrossRef" href="#tblfn0045"><span class="elsevierStyleSup">&#42;&#42;&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
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                      "titulo" => "Cutaneous manifestations of internal malignancies"
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                        0 => array:2 [
                          "etal" => false
                          "autores" => array:4 [
                            0 => "S&#46; Brenner"
                            1 => "E&#46; Tamir"
                            2 => "N&#46; Maharshak"
                            3 => "J&#46; Shapira"
                          ]
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                      "Revista" => array:6 [
                        "tituloSerie" => "Clin Dermatol"
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                        "paginaInicial" => "290"
                        "paginaFinal" => "297"
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                    0 => array:2 [
                      "titulo" => "Cutaneous manifestations of internal malignancy&#58; diagnosis and management"
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                          "autores" => array:3 [
                            0 => "C&#46;E&#46; Kleyn"
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                            2 => "H&#46;K&#46; Bell"
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                        ]
                      ]
                    ]
                  ]
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                    0 => array:1 [
                      "Revista" => array:6 [
                        "tituloSerie" => "Am J Clin Dermatol"
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                        "paginaInicial" => "71"
                        "paginaFinal" => "84"
                        "link" => array:1 [
                          0 => array:2 [
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                            "web" => "Medline"
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                      "titulo" => "Clinical and pathologic findings of paraneoplastic dermatoses"
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                          "autores" => array:5 [
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                            4 => "V&#46; Liu"
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                    0 => array:2 [
                      "doi" => "10.1016/j.jaad.2004.06.051"
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                        "tituloSerie" => "J Am Acad Dermatol"
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                        "paginaInicial" => "745"
                        "paginaFinal" => "762"
                        "link" => array:1 [
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                      "titulo" => "S&#237;ndromes paraneopl&#225;sicos de expresi&#243;n cut&#225;nea"
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                      "doi" => "10.1111/j.1529-8019.2010.01371.x"
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