Get a referral to a thoracic surgeon at a mejor heart care center near you. Consult with her/him on surgery necessity and/or potential. CT Scans with contrast are probably the best imaging tool to see changes. Surgery is not usually indicated until you are at 5.0cm but that can depend upon your size, etc. You're going to be fine. Listen to a THORACIC SURGEON and your whole medical team. They know best. Nayo, Cleveland Clinic, U of M Twin Cities, UCSD LA Jolla, U T Houston. Peace.