Abdominal Aortic Aneurysm (AAA)
Definition
An abdominal aortic aneurysm (AAA) is a "ballooning" or dilatation of the walls of the abdominal aorta, the main artery in the abdomen, due to weakness in the blood vessel. Aneurysms can form in any blood vessel in the body. However, the abdomen is a common place for aneurysms to occur.
Causes
Abdominal aneurysms are caused by hardening of the arteries (atherosclerosis), which can be caused by high blood pressure, diabetes, cigarette smoking, high cholesterol and heredity.