Anomaly scan

Anomaly scan
SynonymsAnatomy scan, second-trimester ultrasound, 20-week ultrasound, level 2 ultrasound
PurposeTo evaluate fetal anatomy and size

The anomaly scan, also sometimes called the anatomy scan, 20-week ultrasound, or level 2 ultrasound, evaluates anatomic structures of the fetus, placenta, and maternal pelvic organs. This scan is an important and common component of routine prenatal care. The function of the ultrasound is to measure the fetus so that growth abnormalities can be recognized quickly later in pregnancy, to assess for congenital malformations and multiple pregnancies, and to plan method of delivery.

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