Adenoid cystic carcinoma of sweat glands: report of two cases.

Two cases of primary cutaneous adenoid cystic carcinoma (ACC) of sweat gland origin are reported. The patients were a 83-year-old man and a 40-year-old woman. Histologically, the neoplasms showed the classic appearance of ACC. CEA, actin and S-100 protein were immunocytochemically demonstrated to be contained in some neoplastic cells. The literature on sweat gland ACC is reviewed and the clinicopathologic profile of this rare tumor considered.