An unusual cerebral mass lesion.

Accepted 15 February 1995 A 54-year-old Caucasian woman living in Bahrain presented with a four-week history of headache associated with heaviness in the left arm and leg. Her past history included recurrent migranous headaches with associated visual aura. Fifteen years prior to admission she had developed a temporary left facial palsy and unsteadiness diagnosed as Bell's palsy. The patient did not smoke and there was no history of drug abuse or blood transfusion. Clinical examination revealed brisk reflexes in the left arm and leg with slight reduction in power. A chest radiograph was normal. A computed tomography (CT) bran scan was performed. The pre-contrast scans revealed a low density area in the deep white matter of the right hemisphere. The post-contrast scan is shown in figure 1.