F403 Pigment Epithelial Hamartoma of Optic Disc

Optic disc tumor discovered incidentally in a 32 year old Asian woman who had no complaints about visual function in her involved left eye. Fundus slide shows granular elevation of left disc obscuring major disc vessels. Some of the granules has a shiny crystalline appearance. Near the vessel entrance there was some dense pigment. The granular tissue was slightly elevated and blurred the disc margins. Fluorecein angiography showed no evidence of leakage in the disc tissue. It was considered that this lesion had been present for all of the life of the patient. Anatomy: Optic disc. Pathology: Pathology shows massive proliferation of pigment epithelium into the optic nerve. F4_03 shows glial prolifferation on the optic disc, multiple drusen, or hyaline bodies and massive proliferation of pigment epithelium into the disc. (See descriptions in reference article.) Disease/ Diagnosis: Pigment epithelial hamartoma of optic disc.