Rare presentation of fungal orbital cellulitis in an immunocompetent infant.

A 3-month-old infant presented with unilateral proptosis. Ophthalmic and physical examinations, computed tomography, and histopathologic examination of a biopsy specimen were performed. Histopathologic examination confirmed fungal orbital cellulitis. The patient responded to 6 weeks of antifungal therapy. Fungal orbital cellulitis should be included in the differential diagnosis for infants with proptosis.