Hemianopic visual field loss as the first clinical evidence of occipital arteriovenous malformation.

Abstract

A 43-year-old patient presenting with a highly congruous homonymous hemianopia was shown by neuro-imaging to have a very large arteriovenous malformation of the brain. The significance of finding this visual field defect, its unusual cause and the absence of symptoms other than longstanding migraine with aura are discussed.