title: Atypical progressive multifocal leucoencephalopathy and primary cerebral lymphoma.
mesh_terms: D001253:Astrocytes / Q000648:ultrastructure; D001932:Brain Neoplasms / Q000150:complications / Q000473:pathology*; D006801:Humans; D007968:Leukoencephalopathy, Progressive Multifocal / Q000150:complications / Q000473:pathology*; D008228:Lymphoma, Non-Hodgkin / Q000150:complications / Q000473:pathology*; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged