Ocular tuberculosis presenting with a conjunctival granuloma.

An 18-year-old female patient was referred with complaints of tearing and redness in the left eye for 3 months after a mild ocular trauma with a turkey feather. She was treated with topical antibiotics and corticosteroids with no improvement. Slit-lamp examination of the left eye showed a vascularized lesion with a polypoidal appearance due to multiple contiguous micronodules on the temporal and inferior bulbar conjunctiva. Results of the anterior and posterior segment examination were unremarkable in both eyes. A biopsy specimen of the conjunctival mass showed multiple tuberculoid granulomas composed of epithelioid histiocytes with associated Langhan's type multinucleate giant cells and a necrotic nodule surrounded by histiocytes and giant cells. The Mantoux test was positive with induration of 15mm. The patient was prescribed antituberculosis therapy. Three months after treatment initiation, the conjunctival lesions had resolved. Mycobacterium tuberculosis should be considered in cases of unilateral chronic recalcitrant conjunctivitis. Biopsy of a conjunctival mass is of utmost importance to establish a definite diagnosis.

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