What are the odds to having a down syndrome baby with 2 ultrasound abnormalities?

I went in for my ultrasound at 19 wks and found out the baby has echoing in the heart ventricles and a cyst at base of brain. Individually, they would not be concerned, but because 2 abnormalities are present I need to go in for a level 2 ultrasound. What are my odds for having a down syndrome baby at 30 with... show more I went in for my ultrasound at 19 wks and found out the baby has echoing in the heart ventricles and a cyst at base of brain. Individually, they would not be concerned, but because 2 abnormalities are present I need to go in for a level 2 ultrasound. What are my odds for having a down syndrome baby at 30 with these abnormalities being present?
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