Cardiology Research, ISSN 1923-2829 print, 1923-2837 online, Open Access
Article copyright, the authors; Journal compilation copyright, Cardiol Res and Elmer Press Inc
Journal website https://www.cardiologyres.org

Case Report

Volume 15, Number 3, June 2024, pages 205-209

A Novel Case of Anomalous Origin of Left Vertebral Artery Associated With Left Subclavian Steal Syndrome

Figures

Figure 1.
Figure 1. (a) Carotid artery duplex showing normal anterograde flow in the left vertebral artery. (b) Monophasic waveform suggesting left subclavian artery stenosis. (c) Reversal of flow in the left vertebral artery when imaged higher up in the neck.
Figure 2.
Figure 2. CT angiogram of neck showing (a) the anomalous origin of the left vertebral artery directly from the aortic arch between the left common carotid artery and the left subclavian artery (LSCA) (blue arrow), and (b) proximal LSCA stenosis (blue arrow).
Figure 3.
Figure 3. Aortic arch angiogram showing (a) the anomalous origin of the left vertebral artery (orange arrow) directly from the aortic arch between the left common carotid artery (green arrow) and the left subclavian artery (LSCA) (blue arrow), and (b) proximal LSCA stenosis.
Figure 4.
Figure 4. (a) Selective angiography confirming significant stenosis of the proximal left subclavian artery (LSCA) with no flow in thyrocervical trunk, (b) selective angiography of left vertebral artery showing retrograde flow in the collaterals from mid-distal vertebral artery to LSCA distal to the stenosis via the thyrocervical trunk, and (c) left subclavian artery (after stent placement in proximal segment) now showing antegrade flow in the thyrocervical trunk.