Eccrine syringofibroadenoma: a report of 2 cases.

Eccrine syringofibroadenoma is a rare benign tumor of the skin arising from the acrosyringeal portion of the eccrine duct. The tumor was first described by Mascaro in 1963, and since then only 8 case reports in 6 publications have been documented. This lesion is likely to be misdiagnosed both clinically and histologically due both to its rarity and its similarity to other more aggressive skin tumors. This report of 2 cases is presented to highlight the salient pathologic and clinical features of the tumor and to describe the long term follow up of 2 patients in whom the lesions have been electively reviewed rather than excised.