Promotion of fetal lung growth for fetuses at risk for pulmonary hypoplasia, such as congenital diaphragmatic hernia, through percutaneous minimally-invasive intraluminal tracheal occlusion was first described by Quintero and collaborators in 2000. Our physicians use techniques that comply with all of the biomedical requirements of the procedure, including percutaneous approach, intraluminal tracheal occlusion, growth with the fetal trachea, lack of fetal adverse effects, self-limited function, and easy removal at the time of birth. As such, patients treated by The Fetal Institute can aspire for the best clinical outcomes with the least rate of complications The procedures are done in the Hospital in the main Operating Room, under maximum antiseptic technique.