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.

The test usually occurs between 18 and 22 weeks of pregnancy ... show Down syndrome or another condition, your healthcare provider may recommend additional tests, like a detailed ultrasound ...

Prenatal testing during the second trimester Quad screen: This voluntary blood test performed between weeks 16 and 18 measures several hormones produced during pregnancy. These tests, also called ...

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 ...