title: Cerebellar infarction secondary to os odontoideum.
abstract: A 43-year-old man developed cerebellar infarction due to atlantoaxial dislocation associated with os odontoideum. Cervical X-ray films confirmed os odontoideum, and conventional angiography revealed irregular narrowing of the right vertebral artery at the axis level. A correlation between the vertebral artery lesion and atlantoaxial instability was shown with 3-dimensional (3-D) computed tomographic (CT) angiography. This is the first case of atlantoaxial dislocation with vertebral artery stenosis demonstrated 3-D CT angiography. 3-D CT angiography can support the conventional angiography with respect to the diagnosis and management of vertebral artery insufficiency associated with occipitocervical deformity.
authors.affiliation: Department of Neurosurgery, Shibata Prefecture Hospital, Niigata, Japan. mfuku529@bri.niigata-u.ac.jp
authors.forename: M
authors.initials: M
authors.lastname: Fukuda
authors.forename: T
authors.initials: T
authors.lastname: Aiba
authors.forename: K
authors.initials: K
authors.lastname: Akiyama
authors.forename: K
authors.initials: K
authors.lastname: Nishiyama
authors.forename: T
authors.initials: T
authors.lastname: Ozawa
mesh_terms: D000328:Adult; D001368:Axis, Cervical Vertebra / Q000473:pathology; D002526:Cerebellar Diseases / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D002533:Cerebral Angiography; D002544:Cerebral Infarction / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D001270:Cervical Atlas / Q000473:pathology; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D008297:Male; D009809:Odontoid Process / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014715:Vertebrobasilar Insufficiency / Q000150:complications; D014965:X-Rays