Figure 10b. Posttraumatic aortic pseudoaneurysm. (a) DSA image shows a posttraumatic pseudoaneurysm located close to the LSA (arrow). (b) DSA image obtained after stent-graft deployment shows that the origin of the LSA has been covered (arrow) to extend the proximal anchoring zone. A spontaneous subclavian steal was established (arrowhead) with no signs of vertebrobasilar or left arm ischemia. (c, d) CT scans obtained before treatment (c) and 1 year after treatment (d) show a decrease in the size of the pseudoaneurysm after exclusion. Note the significant calcifications in the aneurysm wall.