The objective of the “Fetalproject2010” is to advance our knowledge in fetal medicine. We focus on pulmonary hypoplasia (PH) in congenital diaphragmatic hernia (CDH) and its relatively new prenatal treatment option, tracheal occlusion (TO). TO prevents egress of pulmonary fluid, thus triggering lung growth. Yet, the procedure is invasive, with main risks premature rupture of membranes and preterm ...