my wife ange is 24 and we taken the target scan 21 week , they are telling that
1 ."fetus shows non ossified nasal bone with increased risk for trisomy 21- suggested invasive test to rule out aneuploidy"
2. before ultrasound risk for trisomy 21 is 1 in 1100
3.Post ultrasound risk for trisomy 21 is 167
please let me what should we do?
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