Plaque causing homonymous hemianopsia in multiple sclerosis identified by computed tomography.

Three patients with multiple sclerosis (women 20, 24, and 30 years old) had demyelinative plaques that produced homonymous hemianopsia. These lesions were identified by computed tomography which showed the plaques as hypodense areas. All patients with homonymous hemianopsia should undergo computed tomography; if a hypodense or enhancing lesion is identified, the diagnosis of multiple sclerosis must be considered.