title: Mucoepidermoid carcinomas of the lacrimal sac.
abstract: Mucoepidermoid carcinoma is a malignant tumor containing both neoplastic mucin-producing cells and epidermoid cells. To the only reported case arising in the lacrimal sac, we add three additional cases. All three were locally aggressive and required orbital exenterations. No deaths from metastatic disease occurred.
mesh_terms: D000328:Adult; D002277:Carcinoma / Q000473:pathology*; D005134:Eye Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D007766:Lacrimal Apparatus Diseases / Q000473:pathology*; D008297:Male; D008875:Middle Aged