title: Oculomotor palsy treated by microvascular decompression.
abstract: BACKGROUND
  Oculomotor palsy is well known to be due to diabetes mellitus, or aneurysmal compression, or cavernous sinus lesion. Only few reports presented that arterial compression was the reason for oculomotor palsy.
  
  
  METHODS
  We performed a surgical treatment for a 76-year-old man with left oculomotor palsy. During surgical clipping of the left IC-PC aneurysm, it became clear that the left IC-PC aneurysm had not been compressing the third cranial nerve. The left oculomotor nerve was being pinched between the arteriosclerotic PCA and the SCA. Microvascular decompression was carried out, and the oculomotor nerve palsy improved.
  
  
  CONCLUSIONS
  Arteriosclerotic PCA and SCA may compress the oculomotor nerve. Microvascular decompression is effective in this type of oculomotor palsy.
authors.affiliation: Department of Neurosurgery, University of Tsukuba, Ibaraki 305-8575 Japan. kensukes@md.tsukuba.ac.jp
authors.forename: Kensuke
authors.initials: K
authors.lastname: Suzuki
authors.forename: Ai
authors.initials: A
authors.lastname: Muroi
authors.forename: Yuji
authors.initials: Y
authors.lastname: Kujiraoka
authors.forename: Shingo
authors.initials: S
authors.lastname: Takano
authors.forename: Akira
authors.initials: A
authors.lastname: Matsumura
mesh_terms: D000368:Aged; D001099:Arachnoid / Q000473:pathology / Q000601:surgery; D001488:Basilar Artery / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D002531:Cerebellum / Q000098:blood supply; D002533:Cerebral Angiography; D019299:Decompression, Surgical / Q000379:methods*; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D008297:Male; D008866:Microsurgery / Q000379:methods; D019635:Neurosurgical Procedures / Q000379:methods*; D009801:Oculomotor Muscles / Q000294:innervation / Q000503:physiopathology; D009802:Oculomotor Nerve / Q000473:pathology / Q000601:surgery; D015840:Oculomotor Nerve Diseases / Q000209:etiology / Q000473:pathology* / Q000601:surgery*; D020769:Posterior Cerebral Artery / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D013346:Subarachnoid Space / Q000033:anatomy & histology / Q000601:surgery; D000267:Tissue Adhesions / Q000209:etiology / Q000473:pathology / Q000601:surgery; D016896:Treatment Outcome; D014656:Vascular Surgical Procedures / Q000379:methods