An aortic aneurysm is an abnormal enlargement or bulging of the aorta, which is the main artery of the body. Aortic aneurysms can occur anywhere along the aorta, but most commonly occur in the abdominal aorta. Symptoms of an aortic aneurysm include abdominal or back pain, a pulsating feeling in the abdomen, fatigue, and sweating. Diagnosis of an aortic aneurysm can be made through imaging tests such as CT scans, ultrasound, or MRI. Treatment for aortic aneurysms may include medications, lifestyle changes, or surgery, depending on the size and location of the aneurysm.