Figure 1: (a) Doppler ultrasound of the left common carotid artery demonstrating marked wall thickening with subsequent loss of lumen inkeeping with stenosis (arrow). (b) MR angiothorax/neck exhibiting widespread pathological changes in the arterial vessels: narrowing of the thoracic aorta (i), stenosis of the left carotid artery (ii), and bilateral occlusion of the subclavian arteries (iii), with collateral distal filling via the intercostal arteries.