Publisher's Synopsis
Thoracic aortic aneurysm is an expansion, or ballooning, of a section of the aorta within your chest (thorax) that slowly degenerates. The aorta, the body's main blood vessel, starts at your heart and extends all the way to your pelvis, where it branches toward your legs. The larger the aneurysm, the higher the risk it may rupture, leading to damage of the aortic wall and bleeding that could cause death.