title: Posterior circulation hyperperfusion syndrome after superficial temporal artery-superior cerebellar artery bypass for vertebral artery dissection.
abstract: A 68-year-old man was diagnosed with infarction of the cerebellum and medulla oblongata caused by vertebral artery dissection manifesting as severe stenosis with poor collateral flow. He underwent superficial temporal artery (STA)-superior cerebellar artery (SCA) bypass for the prevention of fatal brain stem infarction. He had consciousness disturbance 2 days postoperatively. Single-photon emission computed tomography revealed hyperperfusion in the posterior circulation. His consciousness improved as hyperperfusion improved. We report the first case of posterior circulation hyperperfusion syndrome after STA-SCA bypass and provide a review of the relevant literature.
authors.affiliation: Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan. Electronic address: kenji.fukuda.0315@me.com.
authors.forename: Kenji
authors.initials: K
authors.lastname: Fukuda
authors.affiliation: Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Abe
authors.affiliation: Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan.
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Ueba
authors.affiliation: Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan.
authors.forename: Masakazu
authors.initials: M
authors.lastname: Okawa
authors.affiliation: Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan.
authors.forename: Toshio
authors.initials: T
authors.lastname: Higashi
authors.affiliation: Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan.
authors.forename: Tooru
authors.initials: T
authors.lastname: Inoue
mesh_terms: D000368:Aged; D015901:Angiography, Digital Subtraction; D020526:Brain Stem Infarctions / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*; D002531:Cerebellum / Q000098:blood supply*; D002533:Cerebral Angiography / Q000379:methods; D002548:Cerebral Revascularization / Q000009:adverse effects*; D002560:Cerebrovascular Circulation; D003244:Consciousness Disorders / Q000209:etiology / Q000503:physiopathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D055420:Perfusion Imaging / Q000379:methods; D013699:Temporal Arteries / Q000601:surgery*; D015899:Tomography, Emission-Computed, Single-Photon; D020217:Vertebral Artery Dissection / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D014715:Vertebrobasilar Insufficiency / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology
keywords: Hyperperfusion; STA–SCA bypass; posterior circulation; vertebral artery dissection