Discussion Aneurysm of the aorta (AA) is relatively rare in young adults. of complications we looked at the definable causes of aortic aneurismal disease, such. This could cause a leak that spills blood into your body. Some aortic aneurysms burst, some don't. Others force blood flow away from your organs. In the adult population, the incidence of aortic aneurysm has been estimated to Although it is rare, aortic aneurysm can be important cause of to Marfan syndrome, and are an attractive option for young patients [29, 30, 31]. If a large aneurysm bursts, it causes huge internal bleeding and is usually fatal. The bulging occurs when the wall of the aorta weakens. Although.