title: Olivary degeneration after intracranial haemorrhage or trauma: follow-up MRI.
abstract: We studied serial MRI appearances of transneuronal degeneration in the inferior olives, retrospectively analysing follow-up images of five patients, three with head injury and two with brain stem haemorrhage. We performed 13 MRI studies 4 days to 2 years 7 months after the accident. All but one of the patients exhibited bilateral olivary high signal on T2-weighted images. The interval between causal event and appearance of olivary changes was 2-4 months, images 4 days to 1.5 months after the accidents revealing no changes. Olivary enlargement was observed in four patients 2-4 months after ictus.
authors.affiliation: Department of Radiology, Kanazawa University School of Medicine, Ishikawa, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Suzuki
authors.forename: T
authors.initials: T
authors.lastname: Takashima
authors.forename: F
authors.initials: F
authors.lastname: Ueda
authors.forename: Y
authors.initials: Y
authors.lastname: Fujinaga
authors.forename: Y
authors.initials: Y
authors.lastname: Horichi
authors.forename: J
authors.initials: J
authors.lastname: Yamashita
mesh_terms: D000293:Adolescent; D000328:Adult; D002543:Cerebral Hemorrhage / Q000473:pathology*; D002648:Child; D006259:Craniocerebral Trauma / Q000473:pathology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009847:Olivary Nucleus / Q000473:pathology*; D012189:Retrospective Studies