Prevalence, timing of diagnosis and pregnancy outcome of abdominal wall defects after the introduction of a national prenatal screening program.

Almost all exomphalos and gastroschisis cases are diagnosed prenatally, the majority in the first trimester. Associated anomalies are far more common in exomphalos with a fourfold lower survival rate than gastroschisis. In the exomphalos group, the pregnancy termination rate doubled, while in the gastroschisis group the rate remained low. © 2017 John Wiley & Sons, Ltd.