title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 31-1981.
mesh_terms: D000368:Aged; D001932:Brain Neoplasms / Q000175:diagnosis / Q000473:pathology*; D001933:Brain Stem / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D016403:Lymphoma, Large B-Cell, Diffuse / Q000175:diagnosis / Q000473:pathology*; D008526:Medulla Oblongata / Q000473:pathology; D011149:Pons / Q000473:pathology