Abnormal origin of the vertebral artery from the common carotid artery.
An abnormal origin of the vertebral artery from the common carotid artery (VA-CC) may occur on the right or left side with different embryonic mechanisms. We describe a patient with a double developmental anomaly, a right VA-CC and a right aortic arch. The rotation of the aortic arch caused a "twist" of the embryonic mechanisms of VA-CC and misdirected the differential diagnosis of the embryonic mechanisms at first glance. We discuss the pivotal points in differentiating the embryonic mechanisms of VA-CC.
Chen
C J
CJ
Department of Diagnostic Radiology, Chang Gung Memorial Hospital, Taipei, Taiwan.
Wang
L J
LJ
Wong
Y C
YC
D001027:Aortography; D017536:Carotid Artery, Common / Q000002:abnormalities* / Q000000981:diagnostic imaging; D002544:Cerebral Infarction / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging*; D008875:Middle Aged; D014711:Vertebral Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging