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eSaote&#44; MyLab25Gold&#41; showed a predominantly hypoechoic nodule of 3&#46;7<span class="elsevierStyleHsp" style=""></span>mm<span class="elsevierStyleHsp" style=""></span>&#215;<span class="elsevierStyleHsp" style=""></span>16&#46;5<span class="elsevierStyleHsp" style=""></span>mm with well-defined borders&#44; situated in the deep dermis and subcutaneous cellular tissue &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>A&#41;&#46; The periphery of the lesion presented mixed echogenicity&#44; in contrast to the more hypoechoic central area&#46; In the deep region of the lesions was a hyperechoic area that may have been posterior enhancement&#46; The epidermis appeared as a hyperechoic band&#46; The lesion extended diffusely peripherally&#44; and it was more difficult to identify its borders in this plane &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#44; B and<span class="elsevierStyleHsp" style=""></span>C&#41;&#46; At the lateral borders of the lesion and in the non-nodular part of the tumor&#44; areas of mixed echogenicity predominated over the hypoechoic areas&#46; Color Doppler showed an irregular asymmetric neovascularization at the periphery of the lesion &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#44; B and<span class="elsevierStyleHsp" style=""></span>C&#41;&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0015" class="elsevierStylePara elsevierViewall">Histology performed on an ultrasound-guided punch biopsy revealed a poorly defined neoplastic proliferation in the dermis&#44; forming of anastomosing vascular spaces growing between the collagen bundles and skin appendages&#59; the spaces were lined by endothelial cells with nuclear hyperchromatism and nucleomegaly&#44; with frequent pleomorphic nuclei &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>B&#41;&#46; Stain for human herpesvirus 8 was negative&#46; Based on the clinical&#44; ultrasound&#44; and histopathological findings&#44; we made a diagnosis of idiopathic angiosarcoma of the head and neck&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">Idiopathic angiosarcoma of the head and neck is a rare neoplasm first described by Caro and Stubenrauch in 1945&#46; It is formed of proliferations of cells with endothelial differentiation&#46; The lesions initially appear as erythematous plaques that rapidly progress to violaceous nodules that bleed easily&#46; This type of angiosarcoma grows centrifugally&#44; and can occupy large areas of the face and neck&#46;<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">1</span></a> The clinical differential diagnosis should include entities such as rosacea&#44;<a class="elsevierStyleCrossRefs" href="#bib0050"><span class="elsevierStyleSup">2&#44;3</span></a> lymphoma&#44; skin metastases&#44; pyogenic granuloma&#44; and Kaposi sarcoma&#46; The prognosis is poor&#44; with a 5-year survival of less than 15&#37;&#46;<a class="elsevierStyleCrossRefs" href="#bib0060"><span class="elsevierStyleSup">4&#44;5</span></a> Surgical excision&#44; when possible&#44; is the treatment of choice&#46; Chemotherapy with taxanes and palliative radiotherapy are second line treatment&#46;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">6</span></a> Because of our patient&#39;s advanced age and the size of the lesion&#44; it was decided to start treatment with weekly paclitaxel at a dose of 60<span class="elsevierStyleHsp" style=""></span>mg&#47;m<span class="elsevierStyleSup">2</span>&#44; with a poor response&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">Cutaneous angiosarcoma presents histologically as a poorly defined dermal tumor with vascular tracts that infiltrate the dermis and subcutaneous cellular tissue&#46; The endothelium can be several layers thick and contain mitotic cells&#46; The tumor usually dissects between the collagen fibers&#46; Ultrasound reveals hypoechoic nodules with a mixed peripheral echogenicity&#46; The lower echogenicity of the center of the nodules may correlate with greater tumor mass and cellularity in this central region&#44; characteristic of neoformation&#46; The mixed peripheral echogenicity may indicate reduced cellularity in this peripheral area and dissection of the collagen bundles by tumor cells&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">Ultrasound enables us to clarify the differential diagnosis with certain other conditions&#44; such as dermatofibrosarcoma protuberans&#44; which is characterized by lesions with distinct echogenicity and a lobulated appearance with pseudopodia&#44; and a weak Doppler signal peripherally&#46;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">7</span></a> Kaposi sarcoma is seen as a hypoechoic lesion with an increased Doppler signal within the lesion&#44; in contrast to angiosarcoma&#44; in which the Doppler signal is increased peripherally&#46;<a class="elsevierStyleCrossRefs" href="#bib0075"><span class="elsevierStyleSup">7&#44;8</span></a> Pyogenic granuloma presents as a well-defined&#44; oval hypoechoic lesion in the dermis and subcutaneous cellular tissue&#44; with low-flow central and peripheral vascularity on Doppler study&#46;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">7</span></a> Lymphangiomas are poorly vascular lesions&#44; and this is evident on ultrasound&#46;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">8</span></a> Angiosarcoma of the breast has been reported to present hypoechoic images in the dermis and in the subcutaneous cellular tissue&#44; with a contour showing lobules and spicules<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">8</span></a> &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0035" class="elsevierStylePara elsevierViewall">In the literature reviewed&#44; we found no reports that describe the ultrasound characteristics of idiopathic angiosarcoma of the head and neck&#59; the only available descriptions are of angiosarcoma of the breast&#46;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">8</span></a> In this first description of the ultrasound findings in cutaneous angiosarcoma of the head and neck&#44; ultrasound made guided skin biopsy possible&#44; improving the yield and avoiding the possible complications of blind biopsy&#46; When surgical excision is a therapeutic option&#44; ultrasound could be an interesting tool to help define the borders of the lesion&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Conflicts of Interest</span><p id="par0040" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest&#46;</p></span></span>"
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        "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Please cite this article as&#58; Boas PV&#44; Mart&#237;nez AR&#44; Rodriguez OB&#44; Blanco CC&#46; Primera descripci&#243;n ecogr&#225;fica del angiosarcoma cut&#225;neo idiop&#225;tico de cabeza y cuello&#46; Actas Dermosifiliogr&#46; 2017&#59;108&#58;960&#8211;962&#46;</p>"
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          "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">A&#44; Erythematous-violaceous plaque with well-defined borders in the frontotemporal region&#46; B&#44; Proliferation of neoplastic endothelial cells with nuclear hyperchromatism and nucleomegaly&#44; forming vascular spaces that dissect between the collagen bundles in the dermis&#46; Hematoxylin and eosin&#44; original magnification&#44;<span class="elsevierStyleHsp" style=""></span>x10&#46;</p>"
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          "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">A&#44; Hypoechoic nodule with well-defined borders that are slightly more echogenic than the center of the nodule&#46; B&#44; Color Doppler showed increased vascularity and asymmetrically distributed medium-sized vessels in the base of the nodule&#46; C&#44; Increased vascularity in the non-nodular area of the lesion&#46;</p>"
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          "leyenda" => "<p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Abbreviations&#58; AS&#44; angiosarcoma&#59; DFSP&#44; dermatofibrosarcoma protuberans&#59; KS&#44; Kaposi sarcoma&#59; LA&#44; lymphangioma&#59; PG&#44; pyogenic granuloma&#46;</p>"
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                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Site&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Periphery&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">KS&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Center of the lesion&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">AS&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Round nodule&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Hypoechoic centrally&#44; mixed peripherally&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Periphery&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">PG&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Round nodule&nbsp;\t\t\t\t\t\t\n
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Case and Research Letters
First Sonographic Description of Idiopathic Cutaneous Angiosarcoma of the Head and Neck
Primera Descripción Ecográfica del Angiosarcoma Cutáneo Idiopático de Cabeza y Cuello
Pedro Vilas Boas
Corresponding author
Pedro.22.pvb@gmail.com

Corresponding author.
, Antonio Ruedas-Martínez, Ofelia Baniandrés-Rodriguez, Cristina Ciudad-Blanco
Servicio de Dermatología, Hospital General Universitario Gregorio Marañón, Madrid, Spain
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eSaote&#44; MyLab25Gold&#41; showed a predominantly hypoechoic nodule of 3&#46;7<span class="elsevierStyleHsp" style=""></span>mm<span class="elsevierStyleHsp" style=""></span>&#215;<span class="elsevierStyleHsp" style=""></span>16&#46;5<span class="elsevierStyleHsp" style=""></span>mm with well-defined borders&#44; situated in the deep dermis and subcutaneous cellular tissue &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>A&#41;&#46; The periphery of the lesion presented mixed echogenicity&#44; in contrast to the more hypoechoic central area&#46; In the deep region of the lesions was a hyperechoic area that may have been posterior enhancement&#46; The epidermis appeared as a hyperechoic band&#46; The lesion extended diffusely peripherally&#44; and it was more difficult to identify its borders in this plane &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#44; B and<span class="elsevierStyleHsp" style=""></span>C&#41;&#46; At the lateral borders of the lesion and in the non-nodular part of the tumor&#44; areas of mixed echogenicity predominated over the hypoechoic areas&#46; Color Doppler showed an irregular asymmetric neovascularization at the periphery of the lesion &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#44; B and<span class="elsevierStyleHsp" style=""></span>C&#41;&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0015" class="elsevierStylePara elsevierViewall">Histology performed on an ultrasound-guided punch biopsy revealed a poorly defined neoplastic proliferation in the dermis&#44; forming of anastomosing vascular spaces growing between the collagen bundles and skin appendages&#59; the spaces were lined by endothelial cells with nuclear hyperchromatism and nucleomegaly&#44; with frequent pleomorphic nuclei &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>B&#41;&#46; Stain for human herpesvirus 8 was negative&#46; Based on the clinical&#44; ultrasound&#44; and histopathological findings&#44; we made a diagnosis of idiopathic angiosarcoma of the head and neck&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">Idiopathic angiosarcoma of the head and neck is a rare neoplasm first described by Caro and Stubenrauch in 1945&#46; It is formed of proliferations of cells with endothelial differentiation&#46; The lesions initially appear as erythematous plaques that rapidly progress to violaceous nodules that bleed easily&#46; This type of angiosarcoma grows centrifugally&#44; and can occupy large areas of the face and neck&#46;<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">1</span></a> The clinical differential diagnosis should include entities such as rosacea&#44;<a class="elsevierStyleCrossRefs" href="#bib0050"><span class="elsevierStyleSup">2&#44;3</span></a> lymphoma&#44; skin metastases&#44; pyogenic granuloma&#44; and Kaposi sarcoma&#46; The prognosis is poor&#44; with a 5-year survival of less than 15&#37;&#46;<a class="elsevierStyleCrossRefs" href="#bib0060"><span class="elsevierStyleSup">4&#44;5</span></a> Surgical excision&#44; when possible&#44; is the treatment of choice&#46; Chemotherapy with taxanes and palliative radiotherapy are second line treatment&#46;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">6</span></a> Because of our patient&#39;s advanced age and the size of the lesion&#44; it was decided to start treatment with weekly paclitaxel at a dose of 60<span class="elsevierStyleHsp" style=""></span>mg&#47;m<span class="elsevierStyleSup">2</span>&#44; with a poor response&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">Cutaneous angiosarcoma presents histologically as a poorly defined dermal tumor with vascular tracts that infiltrate the dermis and subcutaneous cellular tissue&#46; The endothelium can be several layers thick and contain mitotic cells&#46; The tumor usually dissects between the collagen fibers&#46; Ultrasound reveals hypoechoic nodules with a mixed peripheral echogenicity&#46; The lower echogenicity of the center of the nodules may correlate with greater tumor mass and cellularity in this central region&#44; characteristic of neoformation&#46; The mixed peripheral echogenicity may indicate reduced cellularity in this peripheral area and dissection of the collagen bundles by tumor cells&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">Ultrasound enables us to clarify the differential diagnosis with certain other conditions&#44; such as dermatofibrosarcoma protuberans&#44; which is characterized by lesions with distinct echogenicity and a lobulated appearance with pseudopodia&#44; and a weak Doppler signal peripherally&#46;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">7</span></a> Kaposi sarcoma is seen as a hypoechoic lesion with an increased Doppler signal within the lesion&#44; in contrast to angiosarcoma&#44; in which the Doppler signal is increased peripherally&#46;<a class="elsevierStyleCrossRefs" href="#bib0075"><span class="elsevierStyleSup">7&#44;8</span></a> Pyogenic granuloma presents as a well-defined&#44; oval hypoechoic lesion in the dermis and subcutaneous cellular tissue&#44; with low-flow central and peripheral vascularity on Doppler study&#46;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">7</span></a> Lymphangiomas are poorly vascular lesions&#44; and this is evident on ultrasound&#46;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">8</span></a> Angiosarcoma of the breast has been reported to present hypoechoic images in the dermis and in the subcutaneous cellular tissue&#44; with a contour showing lobules and spicules<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">8</span></a> &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0035" class="elsevierStylePara elsevierViewall">In the literature reviewed&#44; we found no reports that describe the ultrasound characteristics of idiopathic angiosarcoma of the head and neck&#59; the only available descriptions are of angiosarcoma of the breast&#46;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">8</span></a> In this first description of the ultrasound findings in cutaneous angiosarcoma of the head and neck&#44; ultrasound made guided skin biopsy possible&#44; improving the yield and avoiding the possible complications of blind biopsy&#46; When surgical excision is a therapeutic option&#44; ultrasound could be an interesting tool to help define the borders of the lesion&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Conflicts of Interest</span><p id="par0040" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest&#46;</p></span></span>"
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