title: Pseudoaneurysm complicating superficial temporal artery-superior cerebellar artery bypass.
abstract: A 60-year-old man with vertebrobasilar ischemia unrelieved by anticoagulation was found to have a midbasilar stenosis with an inadequate basilar collateral circulation. He underwent a right superficial temporal-superior cerebellar artery bypass. Following this operation he had a subarachnoid hemorrhage and right third nerve palsy that was due to formation of a pseudoaneurysm at the site of the anastomosis. This aneurysm was managed by ligation of the right superficial temporal artery. Subsequently it became necessary to perform a left superficial temporal artery-superior cerebellar artery bypass because of severe posterior circulation ischemic symptoms.
mesh_terms: D002531:Cerebellum / Q000098:blood supply / Q000601:surgery; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013345:Subarachnoid Hemorrhage / Q000209:etiology; D013514:Surgical Procedures, Operative / Q000009:adverse effects*; D013702:Temporal Lobe / Q000098:blood supply