An aortic aneurysm is an irreversible dilation of the artery wall with a diameter greater than 50% of the normal diameter of the artery. If the aneurysm is larger, the risk of rupture is higher, and the aneurysms tend to grow larger and larger, but cannot return to normal on their own. So what is the mechanism of aortic aneurysm formation?

The subrenal abdominal aorta is a major branch of the aorta that begins inferiorly to the renal artery. Abdominal aortic bulging, stenosis, or occlusion are abnormalities involving the abdominal aortic intima that affect blood flow and flow rate. The result of these conditions is a lack of blood supply to areas and organs in the abdomen, pelvis, and lower extremities. Laparoscopic surgery to treat bulging, occlusion, and narrowing of the lower abdominal aorta is a preferred method of choice in many cases.