Thoracoabdominal Aortic Aneurysm (TAAA)
Thoracoabdominal aortic aneurysm (also called TAAA or T triple-A) is swelling and weakness in the aorta's wall that is extended from the chest into the abdomen. The aorta is the body's major blood vessel that carries blood from the heart to the rest of the body. A thoracoabdominal aortic aneurysm can rupture which results in life-threatening and uncontrollable bleeding.
The abdominal aorta is the most common location for an aneurysm. The most severe cases include the aorta's thoracic and abdominal parts. Aneurysms are caused primarily by calcification (atherosclerosis), degeneration caused by an imbalance between the proteins that create the vessel walls and those that break them down, genetic factors and inflammation.