An aortic aneurysm is a bulging of an area along the aorta (the larger artery that carries blood from your heart to other organs within your body. If severe enough, the aneurysm could burst, leading to more serious health problems. There are different types of aortic aneurysms: Abdominal Aortic Aneurysm (AAA) and Thoracic Aortic Aneurysm.