Progressive multifocal leukoencephalopathy.
D001921:Brain / Q000473:pathology*; D003711:Demyelinating Diseases / Q000473:pathology*; D006801:Humans; D007951:Leukemia, Myeloid / Q000150:complications*; D007968:Leukoencephalopathy, Progressive Multifocal / Q000150:complications / Q000473:pathology; D008297:Male; D008875:Middle Aged