I am 18.2wks pregnant and recently, via an echo, found that our baby has aortic dilation. The aortic root/valve and ascending aorta measures 4mm, apparently 3mm is normal. I'm told that this is around the high normal 98th percentile. There appears to be no other problems, markers, or indications. The heart function, valves, and structure also appear normal along with the fetal bones and other anatomy. I did an amniocentesis and that is still pending. The Pediatric Cardiologist seems to just want to watch and wait and my MFM seems to be more concerned with a grim outlook. If amnio comes back negative, they're looking at Marfans syndrome or Ehlers Danlos which are both rare. The only family history we have associated with any type of heart defects or abnormalities is I (maternal side) have a second cousin that had a VSD. He has since passed and would be 60y/o now. Back then, I'm told, they didn't diagnose any syndromes w/ him. What does this mean? Are we looking at multiple problems and heart surgeries? Are we looking at coddling our child to protect them from possible rupture while playing in the yard? We are considering termination of pregnancy...is this extreme? Please help!