Figure 1.

(a) Reformatted left oblique CTA demonstrates a focal stenosis at the origin of the left ICA secondary to a shelf-like hypodense projection (white arrow) arising from the posterior wall, raising the possibility of a carotid web or noncalcified atheroma. (b) Left common carotid (CCA) anterior oblique DSA centered over the neck demonstrates a prominent curved triangular ridge on the postero-lateral aspect of the left ICA causing flow stagnation in the carotid bulb (black arrow) consistent with a carotid web. (c) Lateral CCA DSA demonstrates final results after angioplasty and stent deployment with no residual stenosis at the left ICA origin, and redundant contrast at the distal carotid bulb with expected thrombosis and vessel remodeling. (d) Color Doppler images demonstrate patent stent (arrow heads) across the distal CCA and proximal ICA with full color saturation and no residual/recurrent stenosis. CTA: computed tomographic angiogram; ICA: internal carotid artery; DSA: digital subtraction angiography.