Endovascular surgery is an innovative, less invasive procedure used to treat problems affecting the blood vessels, such as an aneurysm, which is a swelling or “ballooning” of the blood vessel. The surgery involves making a small incision near each hip to access the blood vessels. An endovascular graft, which is a special fabric tube device framed with stainless steel self-expanding stents, is inserted through the arteries in a catheter, a long, narrow flexible tube, and positioned inside the aorta. Once in place, the graft expands and seals off the aneurysm, preventing blood from flowing into the aneurysm. The graft remains in the aorta permanently.