Dual origin of left vertebral artery

We present a case of a 60-year-old female with headache and vertigo where computed tomography (CT) angiography incidentally revealed a dual origin of the left vertebral artery in which the dominant lateral limb of the left vertebral artery was arising from the left subclavian artery while the accessory medial limb was seen arising from the aortic arch with fusion of the two limbs seen cranial to the transverse process of the sixth cervical vertebra.
Source: Indian Journal of Thoracic and Cardiovascular Surgery - Category: Cardiovascular & Thoracic Surgery Source Type: research