Congenital diaphragmatic hernia (CDH) is a congenital malformation (birth defect) of the diaphragm. Malformation of the diaphragm allows the abdominal organs to push into the proper lung formation.
CDH is a life-threatening pathology in infants, and a major cause of death due to two complications: pulmonary hypoplasia and pulmonary hypertension. Experts disagree on the relative importance of these two conditions, with some focusing on hypoplasia, others on hypertension. Newborns with CDH often have severe respiratory distress which can be life-threatening unless treated appropriately.
radiograph image from ehernia.com