Diagnostic Challenge with Nocardia Subretinal Abscess: A Case Report from Tuberculosis-Endemic Region.

: To describe a case of subretinal abscess, which posed a diagnostic challenge due to the presence of mycobacterial genome in sample obtained from fine needle aspiration biopsy (FNAB). : A retrospective chart review. : A 25-year-old male presented with sudden, painless onset diminution of vision of left eye and found to have placoid patch of choroiditis just temporal to the macula in right eye and showed vitritis, subretinal abscess with exudative retinal detachment and vitreous hemorrhage in left eye. Both aqueous and vitreous samples were negative microbiologically and polymerase chain reaction for various genomes. Sample obtained from FNAB was positive for mycobacterial genome and yielded on culture. She was treated with antitubercular therapy and intravenous and intravitreal antimicrobials. subretinal abscess can be a diagnostic challenge in tuberculosis-endemic region, especially in conditions when there is co-infection with .