title: Imaging studies of cerebral hyperperfusion after carotid endarterectomy. Case report.
abstract: A case is reported of severe unilateral hemispheric edema and localized hemorrhage associated with seizures following endarterectomy of an ipsilateral high-grade carotid stenosis. Imaging studies including angiography, computerized tomography (CT), magnetic resonance imaging/angiography, and xenon-CT, suggested postoperative ipsilateral cerebral hyperperfusion. Cerebral hyperperfusion syndromes caused by a probable failure of vascular autoregulation are rare but potentially serious complications after endarterectomy. The literature on this type of complication is briefly reviewed, and the role of various imaging modalities in identification of the syndrome and in guiding management decisions is emphasized.
authors.affiliation: Department of Neurosurgery, Stanford University School of Medicine, California, USA.
authors.forename: A A
authors.initials: AA
authors.lastname: Penn
authors.forename: D F
authors.initials: DF
authors.lastname: Schomer
authors.forename: G K
authors.initials: GK
authors.lastname: Steinberg
mesh_terms: D001921:Brain / Q000098:blood supply* / Q000000981:diagnostic imaging / Q000473:pathology; D001929:Brain Edema / Q000175:diagnosis / Q000209:etiology*; D017536:Carotid Artery, Common; D016893:Carotid Stenosis / Q000628:therapy; D002533:Cerebral Angiography; D002543:Cerebral Hemorrhage / Q000175:diagnosis / Q000209:etiology; D016894:Endarterectomy, Carotid / Q000009:adverse effects*; D005260:Female; D006801:Humans; D002546:Ischemic Attack, Transient / Q000209:etiology; D018810:Magnetic Resonance Angiography; D008875:Middle Aged; D012640:Seizures / Q000175:diagnosis / Q000209:etiology*; D015899:Tomography, Emission-Computed, Single-Photon; D014057:Tomography, X-Ray Computed