A case of epibulbar osseous choristoma with review of literature.

Epibulbar osseous choristomas are rare congenital simple choristomas consisting of pure bone on the sclera. It is usually recognized in childhood and most often located in the superotemporal quadrant. A case of 7-year-old male who presented with a history of mass in the left eye was reported in this paper. The mass had been present since birth but had showed slight enlargement during the last 6 months. Examination revealed a 7 × 5 mm reddish, hard, and mobile mass located in the superotemporal quadrant. Excisional biopsy was done. On histopathological examination, excised mass was found to be composed of mature bony trabeculae enclosing osteocytes, and diagnosis of epibulbar osseous choristoma was made.