Olivary degeneration after intracranial haemorrhage or trauma: follow-up MRI.
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.
Suzuki
M
M
Department of Radiology, Kanazawa University School of Medicine, Ishikawa, Japan.
Takashima
T
T
Ueda
F
F
Fujinaga
Y
Y
Horichi
Y
Y
Yamashita
J
J
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