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  • Title: A case of subungual reactive eccrine syringofibroadenoma.
    Author: Theunis A, Andre J, Forton F, Wanet J, Song M.
    Journal: Dermatology; 2001; 203(2):185-7. PubMed ID: 11586024.
    Abstract:
    Eccrine syringofibroadenoma (ESFA) is a rare eccrine tumor. We report the case of a 70-year-old woman who had presented a pincer nail deformity on the toes for 55 years and a left painless subungual tumor for 2 years. Histologic examination revealed branching anastomosing strands of epithelial cells with ductal structures in a fibrovascular stroma. The luminal cells showed positive staining for carcinoembryonic antigen, as in acrosyringeal cells and cells of dermal ducts. To our knowledge, our case is the first with a subungual location. In the context of chronic trauma due to a pincer nail, it may be classified in the reactive subtype recently described.
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