title: Juvenile Cerebral Infarction Caused by Bow Hunter's Syndrome during Sport: Two Case Reports.
abstract: We report two cases of juvenile cerebral infarction caused by bow hunter's syndrome (BHS) during sport. Case 1 was a 17-year-old male who developed a partial visual field defect after playing basketball. BHS was diagnosed because cervical ultrasonography demonstrated occlusion of the vertebral artery when the neck was rotated. After C1-2 posterior fixation was performed, his symptoms resolved. Case 2 was an 18-year-old male with recurrent visual disturbance after playing handball. Cerebral infarction occurred repeatedly despite antiplatelet therapy. After 3 years, vertebral artery dissection was diagnosed and stenting was performed, but his symptoms did not resolve. BHS was diagnosed when he was examined at our department. C1-2 posterior fixation was performed and his symptoms resolved. In these two cases, BHS was caused by sporting activity. For accurate diagnosis and treatment of BHS, neuroimaging with cervical rotation is mandatory.
authors.affiliation: Department of Neurosurgery, Hyogo College of Medicine.
authors.forename: Hiroto
authors.initials: H
authors.lastname: Kageyama
authors.forename: Shinichi
authors.initials: S
authors.lastname: Yoshimura
authors.forename: Tomoko
authors.initials: T
authors.lastname: Iida
authors.forename: Manabu
authors.initials: M
authors.lastname: Shirakawa
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Uchida
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Tomogane
authors.forename: Yuki
authors.initials: Y
authors.lastname: Miyaji
mesh_terms: D000293:Adolescent; D001265:Athletic Injuries / Q000000981:diagnostic imaging* / Q000209:etiology / Q000601:surgery; D002544:Cerebral Infarction / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery; D019416:Head Movements; D006801:Humans; D008297:Male; D020217:Vertebral Artery Dissection / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery