Isolated Optic Disc Granuloma as a Presenting Sign of Sarcoidosis.

To report a case of an optic disc granuloma secondary to sarcoidosis in the absence of any systemic symptoms nor evident signs of intraocular inflammation at the time of presentation. Retrospective case report A 59-year-old Caucasian woman with previously unrevealing systemic work up was referred to the uveitis service for persistent optic disc edema of the right eye for over 1 year. Fundoscopic examination revealed an optic disc granuloma with associated hyper-reflectivity on OCT and high surface reflectivity with medium internal reflectivity on B-scan ultrasound. CT chest was negative, however, a PET scan demonstrated extensive FDG activity in the mediastinum and bilateral hilum, consistent with a diagnosis of sarcoidosis. Optic nerve head granulomas can rarely present as the only clinical sign of sarcoidosis. In these cases, additional imaging modalities may be needed to make the appropriate diagnosis. [ABSTRACT FROM AUTHOR]