Aneurysm formation is genetically predisposed. An aortic aneurysm can be acquired by any member of the first degree of the family (mother, father, sister, brother, son, or daughter) of a patient who has an aneurysm. There are four types of aortic aneurysms, namely ascending aortic, aortic arch, descending thoracic aorta, and abdominal aorta. By definition, vascular surgeons treat aneurysms of the descending aorta, the peri-visceral aorta, and the abdominal aorta below the kidney arteries.