RT Journal Article SR Electronic T1 Anomalous Origin of the Right Vertebral Artery: Review of the Literature and Case Report of Right Vertebral Artery Origin Distal to the Left Subclavian Artery JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1318 OP 1321 VO 20 IS 7 A1 Lemke, Arne-Jörn A1 Benndorf, Götz A1 Liebig, Thomas A1 Felix, Roland YR 1999 UL http://www.ajnr.org/content/20/7/1318.abstract AB Summary: We present the case of a 57-year-old patient who was admitted to the hospital for preoperative cerebral angiography because of an intraspinal mass at the level of C1 and C2. Angiographic examination revealed an abnormal origin of the right vertebral artery, which normally originates from the right subclavian artery. Thus, the right vertebral artery was the last branch of the supraaortic vessels. We also review herein the incidence of the various anomalous origins of the right vertebral artery in the literature and discuss their potential embryologic development and clinical significance.