Symmetrical extracranial fenestrations of the vertebral artery. Two cases revealed by angiography.
Extracranial duplication of the vertebral artery was demonstrated angiographically on both sides in a patient with postmeningitis hydrocephalus and in another with hemangioblastoma. Forty-six cases of this anomaly are reviewed.
D000328:Adult; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011859:Radiography; D014711:Vertebral Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging