Just Recently had a CT scan done and it showed a dilatation of the ascending thoracic aorta up to 4.5cm. I have no chest pain, shortness of breath, dizziness ect.I do have mild elevated Blood pressure and take Beta Blockers for it. I`m 5-11 and 184 lbs. and 54 years old. Can someone please expalin this condition to me and how is it watched and treated. How big does it have to get to be surgically treated. Can this be watched & treated with medication?