Visualizing the hidden steal: Multimodal imaging in subclavian steal syndrome

Abstract

Background: Subclavian steal syndrome is a rare vascular phenomenon caused by proximal subclavian artery stenosis or occlusion, leading to retrograde blood flow in the ipsilateral vertebral artery to supply the arm. Patients are often asymptomatic, but the condition can manifest with varied and severe symptoms of vertebrobasilar insufficiency (e.g: vertigo, syncope, ataxia) or upper limb ischemia, particularly when collateral circulation is insufficient or during increased demand. The use of multimodal imaging is crucial for accurate diagnosis and treatment planning