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    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Medical History</span><p id="par0005" class="elsevierStylePara elsevierViewall">The patient was a clinically stable 54-year-old woman who had been diagnosed with Takayasu arteritis 15 years earlier and was receiving treatment with 5<span class="elsevierStyleHsp" style=""></span>mg of prednisone daily and 20<span class="elsevierStyleHsp" style=""></span>mg of methotrexate weekly&#46; The patient came to our department for assessment of asymptomatic skin lesions that had appeared exclusively on her elbows in the previous 6 months&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Physical Examination</span><p id="par0010" class="elsevierStylePara elsevierViewall">Physical examination revealed multiple mildly erythematous papular lesions measuring 2<span class="elsevierStyleHsp" style=""></span>mm in diameter&#44; each with central umbilication&#44; distributed symmetrically on both elbows &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Histopathology</span><p id="par0015" class="elsevierStylePara elsevierViewall">A punch biopsy of one lesion showed an inflammatory infiltrate in the superficial dermis containing histiocytes&#44; several multinucleated giant cells&#44; and lymphocytes expressing T and B immunohistochemical markers&#44; without significant atypia or the presence of lymphocytes in the epidermis&#46; Collagen degeneration was present&#44; with a discrete mucin deposit&#46; Elimination of a material consistent with degenerated collagen through epidermal interruptions was observed in certain areas of the lesion &#40;hematoxylin-eosin&#44; original magnification &#215;<span class="elsevierStyleHsp" style=""></span>100&#41; &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#41;&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0020" class="elsevierStylePara elsevierViewall"><span class="elsevierStyleBold">What Is Your Diagnosis&#63;</span></p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Diagnosis</span><p id="par0025" class="elsevierStylePara elsevierViewall">Perforating granuloma annulare&#46;</p></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Clinical Course and Treatment</span><p id="par0030" class="elsevierStylePara elsevierViewall">The patient was informed that the process was benign and treatment was started with topical methylprednisolone&#46; A slight improvement in the lesions was achieved after several weeks&#46;</p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">Comment</span><p id="par0035" class="elsevierStylePara elsevierViewall">Perforating granuloma annulare &#40;GA&#41; is a rare variant of GA &#40;occurring in 3&#37;-5&#37; of cases&#41; that was first described by Calnan<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">1</span></a> in 1951 and later by Owens and Freeman<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">2</span></a> in 1971&#46; The most common site is the limbs in children and young adults&#46; Perforating GA has been reported in association with diabetes mellitus &#40;especially in generalized cases&#41;&#44; tuberculosis&#44; rheumatoid arthritis&#44; human immunodeficiency virus infection&#44; tattoo application&#44; and as Wolf&#39;s isotopic response after a herpes zoster infection&#46;<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">3</span></a></p><p id="par0040" class="elsevierStylePara elsevierViewall">The etiology and pathogenesis of perforating GA are not fully understood&#44; although it is believed that this entity could be related to a delayed hypersensitivity reaction mediated by helper T cells in the presence of an exogenous antigen&#46; Unlike other forms of GA&#44; perforating GA lesions are located in the most superficial portion of the dermis due to the transepidermal elimination of degenerated collagen&#46;</p><p id="par0045" class="elsevierStylePara elsevierViewall">The clinical presentation of perforating GA consists of skin-colored or slightly erythematous papules measuring 1-5<span class="elsevierStyleHsp" style=""></span>mm&#44; with central umbilication&#46; The papules can be scattered or grouped forming annular lesions&#44; as in classic granuloma annulare&#46;</p><p id="par0050" class="elsevierStylePara elsevierViewall">The differential diagnosis should include various entities&#46; Acquired perforating dermatosis is the most common type of perforating disease&#44; occurring in up to 10&#37; of patients on hemodialysis&#59; lesions typically appear on the extensor surfaces of the limbs and the clinical course is marked by self-resolving flares&#46;<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">4</span></a> In contrast&#44; perforating GA follows a more chronic clinical course&#46; Reactive perforating collagenosis is a rare familial disorder that first appears during childhood&#46; As in perforating GA&#44; the perforating material in reactive perforating collagenosis is collagen&#46; In elastosis perforans serpiginosa&#44; however&#44; the perforating material consists of elastic fibers&#46; The lesions consist of keratotic papules with a serpiginous distribution&#44; affecting the neck&#44; face&#44; and flexural areas&#46;</p><p id="par0055" class="elsevierStylePara elsevierViewall">Follicular mycosis fungoides can manifest as papules centered on a follicle&#44; which can be mistaken for the central umbilication seen in perforating GA&#44; although histology shows a dense perifollicular infiltrate of atypical T cells&#44; occasionally with involvement of the follicular epithelium&#44; in addition to specific immunohistochemical characteristics&#46; Follicular mycosis fungoides most frequently affects the head and neck&#44; unlike perforating GA&#44; which usually affects the limbs&#46; In follicular mucinosis&#44; the lesions tend to group in inflammatory plaques&#44; sometimes causing alopecia&#44; and can be either primary or secondary to a hematologic neoplasm&#44; generally mycosis fungoides&#46;</p><p id="par0060" class="elsevierStylePara elsevierViewall">Given the autoimmune context of our patient&#44; erythema elevatum diutinum was also considered in the differential diagnosis&#46; This entity presents as erythematous brownish or purpuric papules or plaques on the extensor surfaces of the limbs and is characterized histologically by vasculitis with progressive concentric perivascular fibrosis&#46;</p><p id="par0065" class="elsevierStylePara elsevierViewall">Various treatments have been used in perforating GA&#44; including topical corticosteroids or calcineurin inhibitors&#44; imiquimod&#44; intralesional corticosteroids&#44; cryotherapy&#44; and surgical excision&#44; all with unsatisfactory results&#46;<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">5</span></a></p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Conflicts of Interest</span><p id="par0070" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest&#46;</p></span></span>"
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Case for Diagnosis
Umbilicated Papules on the Elbows of a Woman With Systemic Vasculitis
Pápulas umbilicadas en los codos en una paciente con una vasculitis sistémica
C. Lloret-Ruiz
Autor para correspondencia
clloretruiz@gmail.com

Corresponding author.
, N. Barrado-Solís, E. Quecedo-Estébanez
Servicio de Dermatología, Hospital Arnau de Vilanova, Valencia, Spain
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    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Medical History</span><p id="par0005" class="elsevierStylePara elsevierViewall">The patient was a clinically stable 54-year-old woman who had been diagnosed with Takayasu arteritis 15 years earlier and was receiving treatment with 5<span class="elsevierStyleHsp" style=""></span>mg of prednisone daily and 20<span class="elsevierStyleHsp" style=""></span>mg of methotrexate weekly&#46; The patient came to our department for assessment of asymptomatic skin lesions that had appeared exclusively on her elbows in the previous 6 months&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Physical Examination</span><p id="par0010" class="elsevierStylePara elsevierViewall">Physical examination revealed multiple mildly erythematous papular lesions measuring 2<span class="elsevierStyleHsp" style=""></span>mm in diameter&#44; each with central umbilication&#44; distributed symmetrically on both elbows &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Histopathology</span><p id="par0015" class="elsevierStylePara elsevierViewall">A punch biopsy of one lesion showed an inflammatory infiltrate in the superficial dermis containing histiocytes&#44; several multinucleated giant cells&#44; and lymphocytes expressing T and B immunohistochemical markers&#44; without significant atypia or the presence of lymphocytes in the epidermis&#46; Collagen degeneration was present&#44; with a discrete mucin deposit&#46; Elimination of a material consistent with degenerated collagen through epidermal interruptions was observed in certain areas of the lesion &#40;hematoxylin-eosin&#44; original magnification &#215;<span class="elsevierStyleHsp" style=""></span>100&#41; &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#41;&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0020" class="elsevierStylePara elsevierViewall"><span class="elsevierStyleBold">What Is Your Diagnosis&#63;</span></p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Diagnosis</span><p id="par0025" class="elsevierStylePara elsevierViewall">Perforating granuloma annulare&#46;</p></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Clinical Course and Treatment</span><p id="par0030" class="elsevierStylePara elsevierViewall">The patient was informed that the process was benign and treatment was started with topical methylprednisolone&#46; A slight improvement in the lesions was achieved after several weeks&#46;</p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">Comment</span><p id="par0035" class="elsevierStylePara elsevierViewall">Perforating granuloma annulare &#40;GA&#41; is a rare variant of GA &#40;occurring in 3&#37;-5&#37; of cases&#41; that was first described by Calnan<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">1</span></a> in 1951 and later by Owens and Freeman<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">2</span></a> in 1971&#46; The most common site is the limbs in children and young adults&#46; Perforating GA has been reported in association with diabetes mellitus &#40;especially in generalized cases&#41;&#44; tuberculosis&#44; rheumatoid arthritis&#44; human immunodeficiency virus infection&#44; tattoo application&#44; and as Wolf&#39;s isotopic response after a herpes zoster infection&#46;<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">3</span></a></p><p id="par0040" class="elsevierStylePara elsevierViewall">The etiology and pathogenesis of perforating GA are not fully understood&#44; although it is believed that this entity could be related to a delayed hypersensitivity reaction mediated by helper T cells in the presence of an exogenous antigen&#46; Unlike other forms of GA&#44; perforating GA lesions are located in the most superficial portion of the dermis due to the transepidermal elimination of degenerated collagen&#46;</p><p id="par0045" class="elsevierStylePara elsevierViewall">The clinical presentation of perforating GA consists of skin-colored or slightly erythematous papules measuring 1-5<span class="elsevierStyleHsp" style=""></span>mm&#44; with central umbilication&#46; The papules can be scattered or grouped forming annular lesions&#44; as in classic granuloma annulare&#46;</p><p id="par0050" class="elsevierStylePara elsevierViewall">The differential diagnosis should include various entities&#46; Acquired perforating dermatosis is the most common type of perforating disease&#44; occurring in up to 10&#37; of patients on hemodialysis&#59; lesions typically appear on the extensor surfaces of the limbs and the clinical course is marked by self-resolving flares&#46;<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">4</span></a> In contrast&#44; perforating GA follows a more chronic clinical course&#46; Reactive perforating collagenosis is a rare familial disorder that first appears during childhood&#46; As in perforating GA&#44; the perforating material in reactive perforating collagenosis is collagen&#46; In elastosis perforans serpiginosa&#44; however&#44; the perforating material consists of elastic fibers&#46; The lesions consist of keratotic papules with a serpiginous distribution&#44; affecting the neck&#44; face&#44; and flexural areas&#46;</p><p id="par0055" class="elsevierStylePara elsevierViewall">Follicular mycosis fungoides can manifest as papules centered on a follicle&#44; which can be mistaken for the central umbilication seen in perforating GA&#44; although histology shows a dense perifollicular infiltrate of atypical T cells&#44; occasionally with involvement of the follicular epithelium&#44; in addition to specific immunohistochemical characteristics&#46; Follicular mycosis fungoides most frequently affects the head and neck&#44; unlike perforating GA&#44; which usually affects the limbs&#46; In follicular mucinosis&#44; the lesions tend to group in inflammatory plaques&#44; sometimes causing alopecia&#44; and can be either primary or secondary to a hematologic neoplasm&#44; generally mycosis fungoides&#46;</p><p id="par0060" class="elsevierStylePara elsevierViewall">Given the autoimmune context of our patient&#44; erythema elevatum diutinum was also considered in the differential diagnosis&#46; This entity presents as erythematous brownish or purpuric papules or plaques on the extensor surfaces of the limbs and is characterized histologically by vasculitis with progressive concentric perivascular fibrosis&#46;</p><p id="par0065" class="elsevierStylePara elsevierViewall">Various treatments have been used in perforating GA&#44; including topical corticosteroids or calcineurin inhibitors&#44; imiquimod&#44; intralesional corticosteroids&#44; cryotherapy&#44; and surgical excision&#44; all with unsatisfactory results&#46;<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">5</span></a></p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Conflicts of Interest</span><p id="par0070" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest&#46;</p></span></span>"
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