title: Bilateral olivary hypertrophy after unilateral cerebellar infarction.
abstract: We describe a case of bilateral olivary hypertrophy and palatal tremor after unilateral cerebellar infarction. Hypertrophic olivary degeneration (HOD) is associated with hypersignal in the inferior olivary nucleus (ION), on T2-weighted images. HOD has been more often observed ipsilaterally to a central tegmentum tract lesion or contralaterally to a dentate nucleus or a superior cerebellar peduncle lesion. Double innervation of each ION from either dentate nucleus may have underlied the imaging and clinical findings in this 63 year-old male patient.
authors.affiliation: Division of Neurology Hospital das Clínicas/ São Paulo University, São Paulo SP, Brasil.
authors.forename: Adriana Bastos
authors.initials: AB
authors.lastname: Conforto
authors.forename: Jerusa
authors.initials: J
authors.lastname: Smid
authors.forename: Suely Kazue Nagahashi
authors.initials: SK
authors.lastname: Marie
authors.forename: Jovana Gobbi Marchesi
authors.initials: JG
authors.lastname: Ciríaco
authors.forename: Patricia Paula
authors.initials: PP
authors.lastname: Santoro
authors.forename: Claudia da Costa
authors.initials: Cda C
authors.lastname: Leite
authors.forename: Letícia Lessa
authors.initials: LL
authors.lastname: Mansur
authors.forename: Milberto
authors.initials: M
authors.lastname: Scaff
mesh_terms: D002544:Cerebral Infarction / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D006984:Hypertrophy / Q000175:diagnosis / Q000209:etiology; D008297:Male; D008875:Middle Aged; D009847:Olivary Nucleus / Q000473:pathology*