An aneurysm is a bulge in the artery wall weakened by atherosclerosis (hardening of the arteries), smoking, hypertension, or other causes Vessel walls balloon outward with the pressure of the blood flow inside. If an aneurysm bursts, it can cause heavy, life-threatening internal bleeding.
Aneurysms can form in arteries throughout the body, but most occur in the aorta. Starting in the heart and continuing through the chest and abdomen to the legs, the aorta is the body’s largest blood vessel. If the aneurysm occurs in the lower section of the abdomen, it is known as an abdominal aortic aneurysm (AAA) lower portion of the chest, it is called a thoracic aortic aneurysm (TAA). Involves aorta of chest and abdomen, it is known as thoraco-abdominal aortic aneurysm(TAAA) Likewise name of the aneurysm varies depending upon the blood vessel it affects