Vitreoretinal lymphoma with central nervous system involvement in a patient with sarcoidosis: a case report.

Sarcoidosis and vitreoretinal lymphoma are known masqueraders. Recurrent inflammation typical of sarcoid uveitis may mask a more sinister diagnosis such as vitreoretinal lymphoma. Furthermore, sarcoid uveitis treatment with corticosteroids may transiently improve symptoms but further delay a timely diagnosis of primary vitreoretinal lymphoma.