[An extracranial anastomosis between the area supplied by the external carotid artery and the vertebral artery].
D001158:Arteries; D002319:Cardiovascular System; D002339:Carotid Arteries / Q000002:abnormalities*; D002342:Carotid Artery, External; D002533:Cerebral Angiography; D006801:Humans; D014652:Vascular Diseases; D014711:Vertebral Artery / Q000002:abnormalities*
CAROTID ARTERIES/abnormalities; CEREBRAL ANGIOGRAPHY; VERTEBRAL ARTERY/abnormalities