title: Dissecting aneurysm of the extracranial vertebral artery after endovascular surgery.
abstract: A 43-year-old man with a scalp arteriovenous fistula developed cerebellar and pontine infarctions after an endovascular procedure. Nine months after the procedure, the patient experienced transient loss of consciousness. A fusiform dilatation of the left vertebral artery at the level of the atlas was found on angiography. The lesion was excised and a saphenous vein graft was interposed. Histological examination of the resected specimen revealed a dissecting aneurysm. This may have been precipitated by subintimal passage of the guide wire/catheter at the time of his endovascular surgery or by chemical damage to the arterial wall from embolic material.
authors.affiliation: Department of Neurosurgery, National Cardiovascular Center, Osaka, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Fukao
authors.forename: N
authors.initials: N
authors.lastname: Hashimoto
authors.forename: K
authors.initials: K
authors.lastname: Kazekawa
authors.forename: Y
authors.initials: Y
authors.lastname: Yonekawa