Congenital diaphragmatic hernia (CDH) is a developmental defect characterized by a partial or complete absence of the diaphragm. It affects approximately one in 4,000 fetuses. The condition can allow abdominal organs, such as the liver and intestines, to protrude into the thoracic cavity and compress the lungs, disrupting lung development. In severe cases, all aspects of lung physiology are affected, leading to signifcant morbidity and mortality after birth.