Injury of the lateral geniculate body in an amateur boxer

A 26-year-old amateur boxer noticed a visual field defect without an appare nt temporal correlation with a fight. Computerized perimetry showed right i nferior homonymous quadrantopsia and congruous horizontal sectoranopia. Mag netic resonance imaging revealed a CSF-filled cavity in the left lateral ge niculate body, which was surrounded by a rim of signal change without hemos iderin deposits. A signal change along the course of the left optic radiati on consistent with wallerian degeneration was also present. Ischemia in the territories of the perforating branches of the anterior and lateral choroi dal arteries due to vascular injury might be responsible for the lateral ge niculate body lesion in this patient.