Epibulbar osseous choristoma – A case of conjunctiva tumor

Epibulbar osseous choristoma is a rare benign tumor of the conjunctiva, most commonly located in the superotemporal quadrant and more frequently observed in females. Its etiology remains uncertain, and diagnosis requires histopathological confirmation. We report a case of a 14-year-old girl presenting with a 1-year history of foreign body sensation in her right eye. Ocular examination revealed a firm, superotemporal conjunctival mass. Excisional biopsy confirmed an osseous choristoma measuring 5.5 mm in diameter. Histopathological evaluation demonstrated mature lamellar bone containing osteocytes and Haversian canals. The lesion was completely excised without complications, and the patient remained symptom-free postoperatively. Although the pathogenesis of epibulbar osseous choristoma is not well understood, it should be considered in the differential diagnosis of conjunctival lesions presenting as firm masses. Surgical excision remains the treatment of choice for symptomatic cases, offering excellent outcomes and low recurrence rates.