The presence of mild ventriculomegaly should prompt a detailed ultrasound evaluation to define more precisely any structural anomalies and is sufficient reason to consider genetic testing.

An NT scan, or nuchal translucency scan, is a non-invasive ultrasound screening for Down syndrome and ... At 11 weeks, the skin fold measures up to 2 mm. At 13 weeks and 6 days, it can be up ...

Many investigators have reported the association between each isolated ultrasound marker and the risk for Down syndrome. Vintzileos and associates [19] reported the incidence of ultrasound markers ...