Prenatal diagnosis of structural anomalies.

The ultrasound diagnoses of fetal anomalies affecting obstetric management were initially made in the early 1970s. Since this breakthrough, ultrasound diagnosis and prenatal management of structural fetal abnormalities have become essential and evolving components of prenatal diagnosis and therapy. In this overview, we review recent contributions in the peer review literature on four controversial topics: choroid plexus cysts, cystic hygroma, ventral wall defects, and hydronephrosis.