Case 14-2004

Abstract
A 66-year-old man developed progressive left-sided weakness over a two-month period. He was a renal-transplant recipient and had alcoholic cirrhosis, diabetes, and coronary artery disease. Magnetic resonance imaging studies showed, on T2-weighted images, a hyperintense lesion in the left frontal white matter, which gradually enlarged. New lesions developed in the right frontal area and brain stem. A diagnostic procedure was performed.