Mucinous Syringometaplasia: Case Report and Review of the Literature.

Mucinous syringometaplasia is a rare and poorly recognized entity that usually presents as a warty tumor in acral regions. It is more frequent in men, and the age of presentation is variable. Typically, it has been reported as a solitary lesion with a warty appearance that occasionally can drain serous material. The affected sites include head, neck, breast, acral regions, and buttocks. The evolution over time is variable. The pathogenesis has not been elucidated. Diagnosis is established through histopathology, the characteristic feature is an epidermal invagination, which creates a structure similar to a "pore" at the dermal level. The clinical differential diagnosis is mainly with a viral wart, but it can also resemble basal cell carcinomas and other adnexal tumors. The treatment is surgical, and no recurrences have been reported to date. We describe the case of a 25-year-old woman who presented with a lesion on one of her eyelids. A shave removal of the lesion was performed, and the diagnosis was established by histopathologic examination.