Oculomotor palsy treated by microvascular decompression.
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.
Suzuki
Kensuke
K
Department of Neurosurgery, University of Tsukuba, Ibaraki 305-8575 Japan. kensukes@md.tsukuba.ac.jp
Muroi
Ai
A
Kujiraoka
Yuji
Y
Takano
Shingo
S
Matsumura
Akira
A
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