An aneurysm occurs when part of an artery’s wall weakens, causing it to bulge or widen. Aneurysms can occur due to poor diet, high blood pressure, high cholesterol, atherosclerosis, obesity ...

A large fusiform aneurysm was found ... was excised and a No. 9 Starr-Edwards valve inserted. 5 Then the ascending aortic aneurysm was removed and replaced by a Teflon prosthesis.