Swinging subclavian artery web.

Subclavian artery web (SAW) is a rare intimal variant of fibromuscular dysplasia that has been recognized as a potential cause of posterior-circulation stroke. On imaging, SAW typically presents as a thin, shelf-like intraluminal projection that could be misinterpreted as dissection or atherosclerotic plaque. Given the rarity of this entity, the optimal management strategy remains uncertain. Analogous to carotid artery web, stent implantation could resolve underlying hemodynamic disturbances and reduce the risk of embolic events. Herein, we report a case of SAW diagnosed via digital subtraction angiography (DSA) combined with computed tomography angiography (CTA), followed by stent implantation to prevent embolization.