Bilateral Concurrent Endocrine Mucin-Producing Sweat Gland Carcinoma and Mucinous Carcinoma of the Eyelids.

Endocrine mucin-producing sweat gland carcinoma (EMPSGC) is thought to be a precursor to mucinous carcinoma, both of which are rare. In this case report, the authors present a 55-year-old woman with concurrent EMPSGC and mucinous carcinoma manifesting with 2 distinct lesions on her left upper and lower eyelid and 1 lesion on her right lower eyelid. Biopsy and immunohistochemical staining supported primary cutaneous origin of the tumors.