title: Trochlear nerve enhancement on three-dimensional magnetic resonance imaging in Fisher syndrome.
abstract: OBJECTIVE
  To examine the lesion associated with external ophthalmoplegia in Fisher syndrome using three-dimensional magnetic resonance imaging (3-D MRI).
  
  
  METHODS
  Case report. A 65-year-old woman with Fisher syndrome was investigated by gadolinium-enhanced 3-D MRI.
  
  
  RESULTS
  The extramedullary portion of the left trochlear nerve was enhanced.
  
  
  CONCLUSIONS
  Contrast-enhanced 3-D MRI revealed that the lesion responsible for the external ophthalmoplegia in Fisher syndrome is located in the extramedullary portion of the trochlear nerve.
authors.affiliation: Department of Neurology, Dokkyo University School of Medicine. htanaka@key.unizh.ch
authors.forename: H
authors.initials: H
authors.lastname: Tanaka
authors.forename: N
authors.initials: N
authors.lastname: Yuki
authors.forename: K
authors.initials: K
authors.lastname: Hirata
mesh_terms: D000368:Aged; D003287:Contrast Media; D003389:Cranial Nerve Diseases / Q000175:diagnosis; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging; D019846:Miller Fisher Syndrome / Q000175:diagnosis*; D014321:Trochlear Nerve / Q000473:pathology*
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA