title: Claude's syndrome in association with posterior cerebral artery stenosis.
abstract: BACKGROUND
  We report a case of a 61 year old man with midbrain infarction causing Claude's syndrome attributable to stenosis of the posterior cerebral artery.
  
  
  METHODS
  The patient presented with a pupil-sparing left third nerve palsy and contralateral ataxia. A background history of treated hypertension and cigarette smoking was obtained. Magnetic resonance imaging revealed an area of infarction involving the left medial midbrain. Magnetic resonance angiography revealed significant stenosis of the left posterior cerebral artery. Antiplatelet therapy was instituted and the patient made a satisfactory recovery.
  
  
  CONCLUSIONS
  This is the first reported case of Claude's syndrome arising in association with stenosis of the posterior cerebral artery. Intracranial large vessel disease should be considered as a potential aetiologic factor in patients with similar midbrain ischaemia.
authors.affiliation: University Department of Medicine, Western Infirmary, Glasgow, G11 6NT.
authors.forename: T
authors.initials: T
authors.lastname: Dhanjal
authors.forename: M
authors.initials: M
authors.lastname: Walters
authors.forename: N
authors.initials: N
authors.lastname: MacMillan
mesh_terms: D001259:Ataxia / Q000209:etiology; D020526:Brain Stem Infarctions / Q000209:etiology* / Q000503:physiopathology*; D002544:Cerebral Infarction / Q000503:physiopathology; D003251:Constriction, Pathologic / Q000150:complications / Q000503:physiopathology; D004172:Diplopia / Q000209:etiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D020769:Posterior Cerebral Artery / Q000503:physiopathology*