title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 6-1981.
mesh_terms: D000328:Adult; D001254:Astrocytoma / Q000175:diagnosis / Q000473:pathology*; D001932:Brain Neoplasms / Q000175:diagnosis / Q000473:pathology*; D006801:Humans; D008297:Male; D008526:Medulla Oblongata; D009361:Neoplasm Invasiveness