title: A case of primary oncocytic adenocarcinoma of the lacrimal sac.
abstract: Lacrimal sac tumours are rare entities. Patients often present with epiphora, recurrent dacryocystitis, and/or a lacrimal sac mass. Neoplasms of the lacrimal system may conveniently be grouped into epithelial and non-epithelial types: papillomas are the most common benign epithelial tumours, while oncocytic adenocarcinomas are extremely rare. Here we report a case of primary oncocytic adenocarcinoma of the lacrimal sac in a 56-year-old man.
authors: Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China.
authors: Jingxue
authors: J
authors: Zhang
authors: Jianmin
authors: Ningli
authors: N
authors: Wang
authors: Jitong
authors: J
authors: Shi
authors: Xin
authors: X
authors: Ge