title: Symptomatic duplication of the vertebral artery.
abstract: A case is presented of extracranial duplication of the vertebral artery in a patient who had spinal cord symptoms for 26 years. Vertebral angiograms and computed tomography with metrizamide enhancement demonstrated a bypass artery of the duplication compresing the upper cervical spinal cord intradurally at the level of the atlas; this finding was verified at operation. The symptomatology and clinical significance of this rare case are discussed.
mesh_terms: D000328:Adult; D002533:Cerebral Angiography; D003399:Craniotomy; D006801:Humans; D007796:Laminectomy; D008297:Male; D009333:Neck; D013116:Spinal Cord / Q000000981:diagnostic imaging; D013117:Spinal Cord Compression / Q000209:etiology; D014057:Tomography, X-Ray Computed; D014711:Vertebral Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery