A nuchal translucency scan is an optional ultrasound a person can have during their first trimester of pregnancy. It can help determine the risk of Down syndrome and some other congenital conditions ...
Oct. 14, 2002 — Measuring nuchal translucency in the early second trimester may be the best single test for fetal trisomy 21 and other chromosomal abnormalities, according to a report in the October ...
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