PLE-4933

An infant is born full term to a woman who had an uncomplicated pregnancy. Immediately after delivery, the infant was noted to be cyanotic, tachypneic, and with intercostals retractions. There was absent breath sounds on both lung fields. Bowel sounds were heard on the left hemithorax. The abdomen is scaphoid. The CXR shows a multicystic mass in the left chest with a shift of the mediastinum to the right. What is the most likely diagnosis?