title: Radiographic conjugate horizontal eye deviation in patients with acute cerebellar infarction.
abstract: BACKGROUND
  Conjugate eye deviation (CED) has not been fully investigated in patients with acute cerebellar infarction. We investigated the incidence of CED on neurological examination and head imaging with acute cerebellar infarction and associations of CED with the involved vascular territory, lesion site and other clinical factors.
  
  
  METHODS
  We retrospectively reviewed clinical records and imaging in patients with acute cerebellar infarction within 12h after onset. We defined radiographic CED as deviation of each eye to the same side >10° on head imaging.
  
  
  RESULTS
  Thirty-five patients with acute cerebellar infarction were identified (22 men; age range, 37-85 years). No patients showed CED on neurological examination, but 13 (37%) had radiographic CED, mostly contralateral to the lesion. As for infract location, the posterior inferior cerebellar artery (PICA) territory (44% vs. 20%, p=0.18) and flocculonodular lobe and/or vermis (54% vs. 32%, p=0.20) tended to be more involved in patients with radiographic CED than in those without.
  
  
  CONCLUSIONS
  Radiographic CED seems relatively common in patients with acute cerebellar infarction, particularly the PICA territory infarcts including the flocculonodular lobe and/or vermis.
authors.affiliation: Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan.
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Nishimura
authors.affiliation: Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan. Electronic address: ohar21@gmail.com.
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Ohara
authors.affiliation: Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan.
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Nagatsuka
authors.affiliation: Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Minematsu
authors.affiliation: Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Toyoda
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D020520:Brain Infarction / Q000150:complications*; D002531:Cerebellum / Q000473:pathology*; D002536:Cerebral Arteries / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009460:Neurologic Examination; D009759:Nystagmus, Pathologic / Q000000981:diagnostic imaging* / Q000209:etiology*; D011859:Radiography; D012189:Retrospective Studies; D018709:Statistics, Nonparametric; D015898:Tomography Scanners, X-Ray Computed; D014711:Vertebral Artery / Q000473:pathology
keywords: Cerebellar infarction; Conjugate eye deviation; Flocculonodular lobe; Head imaging; Neurological examination; Posterior inferior cerebellar artery; Vermis