The most common type of congenital diaphragmatic hernia is caused by:

E. A defect through the pleuroperitoneal fold.

DISCUSSION: Eventration of the diaphragm is related to phrenic nerve paralysis. It is more commonly observed after a breech delivery and may be associated with torticollis and Erb's palsy. The space of Larrey is located anteriorly just off the midline. A Morgagni hernia passes through this potential space. An abnormally wide esophageal hiatus would most likely create a sliding hiatal hernia. The most common type of congenital diaphragmatic hernia in the neonate is the posterolateral Bochdalek hernia, which passes through a defect in the developing pleuroperitoneal fold.