A Case of Episcleral Cartilaginous Choristoma

PURPOSE: To report a case of episcleral cartilaginous single tissue choristoma attached to pterygium with literature review. METHODS: A-65-year old woman had a pterygium. we found hard and movable mass attached to pterygium over medial rectus muscle when we excised pterygium. Excisional biopsy was done. RESULTS: This mass was confirmed as episcleral cartilaginous single tissue choristoma.