title: Brain tumors.
mesh_terms: D001254:Astrocytoma / Q000473:pathology; D001932:Brain Neoplasms / Q000473:pathology / Q000648:ultrastructure; D001933:Brain Stem / Q000473:pathology; D002528:Cerebellar Neoplasms / Q000473:pathology; D005909:Glioblastoma / Q000473:pathology; D006801:Humans; D007031:Hypothalamus / Q000473:pathology; D009367:Neoplasm Staging; D009374:Neoplasms, Experimental / Q000473:pathology; D009897:Optic Chiasm / Q000473:pathology