![]() ![]() It is a rare condition, as only 25 percent of aortic aneurysms occur in the chest. TAA has a survival rate of 56 percent without treatment and 85 percent following surgery. Less commonly, a thoracic aortic aneurysm (TAA) can affect the part of the aorta running through the chest. Without surgery, the annual survival rate for an AAA of over 6 cm is 20 percent.ĪAA can rapidly become fatal, but those that survive the transfer to a hospital have a 50 percent chance of overall survival. This occurs in the part of the aorta that runs through the abdomen. The most common aneurysm of the aorta is an abdominal aortic aneurysm (AAA). ![]() The normal diameter of the aorta is between 2 and 3 centimeters (cm) but can bulge to beyond 5 cm with an aneurysm. The aorta is the large artery that begins at the left ventricle of the heart and passes through the chest and abdominal cavities. The risk of rupture depends on the size of the bulge. Saccular aneurysms bulge only on one side.Fusiform aneurysms bulge all sides of a blood vessel.The arteries of the brain and heart are the two most common sites of a serious aneurysm. Share on Pinterest The rupture of an aneurysm can be fatal.Īneurysms are classified by their location in the body.
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