RT Journal Article SR Electronic T1 Anomalous vertebral artery origins: the first and second reports of two variants JF Journal of NeuroInterventional Surgery JO J NeuroIntervent Surg FD BMJ Publishing Group Ltd. SP 160 OP 162 DO 10.1136/jnis.2009.001271 VO 2 IS 2 A1 Daniel P Hsu A1 Ashley D Alexander A1 Robert C Gilkeson YR 2010 UL http://jnis.bmj.com/content/2/2/160.abstract AB We present two cases of aberrant origins of vertebral arteries. Case 1 is of a patient undergoing evaluation of an infrarenal aortic aneurysm stent graft. Computed tomography (CT) angiogram revealed an aberrant right vertebral artery that subsequently joined a second right vertebral artery that had the typical origin off the right subclavian artery. This represents an unusual anatomic variation not previously reported in the literature. Case 2 is of a patient being evaluated for thoracic aorta injury. CT angiogram of the chest revealed a five-vessel aortic arch with aberrant origin of the bilateral vertebral arteries distal to the left subclavian artery.