Neurobrucellosis: a partially treatable cause of vision loss.

Involvement of the central nervous system due to brucellosis is rare and has a broad range of clinical manifestations. Reported here is a case of neurobrucellosis in a 13-year-old boy leading to visual impairment and unilateral hearing loss. Cranial magnetic resonance imaging revealed a suprasellar mass with extension to the optic chiasm. This case represents a novel finding of pediatric neurobrucellosis involving the optic chiasm. The patient's visual acuity, but not hearing, improved after initiation of antibiotic therapy.