Discussion Congenital diaphragmatic hernia (CDH) occurs in 1 / 2000-3000 live births. Its overall mortality has been hard to determine as many infants die in-utero or just after birth before transfer for surgical care. One study found that ~61% of fetuses with CDH are live born. Many of these fetuses had other congenital anomalies. Mortality after live birth is ~ 40-62%. There are 3 major types of CDH: Bochdalek hernia which occurs posterolaterally Morgagni hernia which occurs anteriorly Hiatus hernia Left sided Bochdalek hernias are the most common (85%). Treatment currently includes fetal surgical repair, post-natal surgical repair and critical care. Learning Point Cardiothoracic surgical repairs are critical for treatment of CDH and other congenital heart disease or congenital malf...