That gives me hope! I found out yesterday that my ascending is normal, but my root is 4.3cm. I am freaking out, but it sounds like you were 50 when you found out that yours was 4.2cm. I am 57 and looking at changing my life, but wondering whether this thing will be a monster. I can't rely on your experience for certainty, but it does indicate that some have it for years with no adverse affects and it can grow slowly. have you always had the valve regurgitation? Was it mild at first then progressed to moderate? I assume my mild aortic regurgitation is a result of the root dilation.