Squamoid eccrine ductal carcinoma: A diagnostic challenge
Squamoid eccrine ductal carcinoma (SEDC) is a rare primary cutaneous tumor that exhibits both squamous and adnexal ductal differentiation. We report a case of SEDC presenting as multiple nodules on the scalp of a 58-year-old man. Histopathological examination of the excised lesion showed a tumor in...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2014-01-01
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| Series: | Indian Journal of Dermatopathology and Diagnostic Dermatology |
| Subjects: | |
| Online Access: | http://www.ijdpdd.com/article.asp?issn=2349-6029;year=2014;volume=1;issue=2;spage=90;epage=93;aulast=Krishnamurthy |
| Summary: | Squamoid eccrine ductal carcinoma (SEDC) is a rare primary cutaneous tumor that exhibits both squamous and adnexal ductal differentiation. We report a case of SEDC presenting as multiple nodules on the scalp of a 58-year-old man. Histopathological examination of the excised lesion showed a tumor in the dermis composed of duct-like structures that represented the eccrine component and squamoid cells in nests and in an infiltrating pattern. Immunohistochemical (IHC) positivity for cytokeratin 5/6, epithelial membrane antigen (EMA), and p63 confirmed the squamoid, ductal, and primary cutaneous nature, respectively, and differentiated it from eccrine poroma, microcystic adnexal carcinoma, and porocarcinoma with squamous differentiation. With a demonstrated invasive potential, recurrent nature, and ambiguous metastatic potential, Mohs micrographic surgery, an established and successful, yet tissue-sparing surgical modality with lower recurrence rate, is the recommended treatment of choice and a close follow-up of these patients is suggested for further experiences of this tumor. |
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| ISSN: | 2349-6029 2349-6029 |