I had a bicuspid aortic valve, and an ascending thoracic aneurysm repaired 3 years ago. Although my cardiologist told me the aneurysm was created by turbulence from the valve, I've read other opnions that it is caused by a congenital connective tissue disorder, and that I am at risk for brain aneurysms too. What is your opinion? And do I need to be monitored for brain aneurysms, and if so, how?