Atypical encephalitis of the brain stem.
D000328:Adult; D001933:Brain Stem / Q000473:pathology*; D002561:Cerebrovascular Disorders / Q000473:pathology; D004660:Encephalitis / Q000473:pathology*; D005260:Female; D006801:Humans; D008214:Lymphocytes; D010950:Plasma Cells