Coronary Subclavian Steal Syndrome Evaluated with Multimodality Imaging.

In patients with mammary-coronary bypass grafts, the presence of a subclavian artery stenosis proximal to the internal mammary artery may result in a condition termed coronary-subclavian steal syndrome of which the incidence varies between 0.07-3.4% among those requiring coronary grafts. We reported a patient with a history of the coronary artery bypass graft who presented with typical angina pectoris at rest that was exacerbated by selective exercise of the left upper extremity in whom occlusion of the left subclavian artery was demonstrated in this patient by 3D reconstruction of computed tomography angiography, a reversal blood flow in the left internal mammary artery-left anterior descending artery graft by Doppler ultrasonography, and a coronary angiography.