aortic aneurysm (MONDO_0005160) is a ruptured aneurysm located in the wall of the proximal portion of the descending aorta proceeding from the arch of the aorta. Also known as: abdominal aortic aneurysm, ruptured, aortic aneurysm (disease), aortic aneurysm of unspecified site, ruptured, ruptured abdominal aortic aneurysm, ruptured aortic aneurysm, ruptured thoracic aneurysm, ruptured thoracic aortic aneurysm, ruptured thoracoabdominal aortic aneurysm.