Giant hidrocystoma of the orbit presenting with inversion and ptosis of the upper eyelid

A case of giant hidrocystoma of the orbit in a 57-year-old female causing pain, epiphora and ptosis is reported. The cystic mass was totally excised as a whole. Histopathologic examination revealed eccrine hidrocystoma of the orbit. Hidrocystoma must be considered in the differential diagnosis of patients presenting with periocular masses causing pain and ptosis. © 2017 by Turkish Ophthalmological Association.