Abstract
Subacute disseminated histoplasmosis is an uncommon entity. Typical neuro-ophthalmologic manifestations are usually secondary to histoplasmomas or encephalitis. A 45-year-old man noted blurred vision while receiving empiric antituberculosis therapy for fever and diffuse granulomatous disease of unknown origin. Vertical-gaze palsy, right horizontal-gaze paresis, and mild right optic neuropathy were found on neuro-ophthalmologic examination. Further questioning revealed a history of frequent contact with fighting cocks from South America. Magnetic resonance images were consistent with multiple hemorrhagic infarcts, areas of inflammation, or both, and cerebral angiography showed changes consistent with vasculitis. A previously obtained biopsy specimen from the duodenum was restained and found to be positive for fungal elements. Serum antigen titers for Histoplasma capsulatum demonstrated evidence of active infection. This case is a rare example of a supranuclear ocular motility disturbance and optic neuropathy secondary to an occlusive vascular process in a patient with subacute disseminated histoplasmosis.
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