Subretinal mass as a presenting sign of posterior scleritis: a case report

We report a case of an unusual clinical presentation of posterior scleritis. A 40-year-old woman suffered from sudden blurred vision in her left eye for 1 day. She had no systemic or autoimmune diseases. Fundus examination revealed a subretinal mass (10.5 x 6 mm in basal diameter) in the nasal-superior quadrant extending from the optic disc to the periphery. Overlying retinal striae were obvious. Optic disc hyperemia and mild edema were noted. Fluorescein angiography did not show dye leakage or tumor-feeding vessels. Ultrasonography showed high internal reflectivity of the subretinal mass and thickened sclera with T-sign. Under the impression of posterior scleritis, corticosteroids and nonsteroidal anti-inflammatory drugs were given orally and topically. After 4 weeks, the subretinal mass disappeared without any sequelae. The patient recovered full vision. This case suggests that posterior scleritis is among the differential diagnoses for a fundus mass. There has been no other similar report in Taiwan.