title: Progressive multifocal leukoencephalopathy.
mesh_terms: D001921:Brain / Q000473:pathology; D002467:Cell Nucleus; D003711:Demyelinating Diseases; D006801:Humans; D002479:Inclusion Bodies; D007181:Inclusion Bodies, Viral; D007968:Leukoencephalopathy, Progressive Multifocal / Q000473:pathology; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D009457:Neuroglia; D008258:Waldenstrom Macroglobulinemia / Q000150:complications*