A 10-day old infant presents to his pediatrician for a regul…
A 10-day old infant presents to his pediatrician for a regularly scheduled well-child check with increased work of breathing and respiratory distress. On physical exam, the infant was found to have decreased breath sounds on one side of his chest. His physician ordered a chest x-ray that showed a congenital diaphragmatic hernia. What side of the chest was most likely found to have reduced breath sounds, and what is the embryologic origin of the tissues that failed to form correctly in this infant in-utero?