Transradial angioplasty and stent placement for total occlusion of aberrant right subclavian artery: A case report.

Aberrant right subclavian artery is one of the most common congenital anatomical variations of the aortic arch, but its occlusion is extremely rare. Although femoral artery access for endovascular treatment has become the mainstream approach for subclavian artery stenosis or occlusion, when the femoral artery approach fails to identify the arterial stump, the radial artery approach becomes an alternative. This report presents a case in which, after failure to treat via the femoral artery, a self-expanding stent was successfully deployed through the radial artery approach to treat a long segment occlusion of the aberrant right subclavian artery. The case involved a 71-year-old female patient who presented with a 3-month history of recurrent dizziness, right upper limb weakness, and episodic coldness in the right hand. Clinical and Duplex ultrasound findings confirmed subclavian steal syndrome secondary to aberrant right subclavian artery occlusion. The patient underwent successful stent implantation via the radial artery approach, and postoperatively, the symptoms resolved, and antegrade flow in the vertebral artery was restored. This case highlights the rare long-segment occlusion of the aberrant right subclavian artery and suggests that the radial artery approach may serve as a potential method for occlusion recanalization.