Bilateral congenital eventration of diaphragm: keep in mind, the other side.

Eventration of diaphragm is an uncommon disorder in which diaphragmatic muscle is replaced by fibroelastic tissue, either partially or completely. Bilateral eventration is even rarer. We present a case of bilateral eventration of diaphragm in newborn with a fibroelastic sac on left side and diaphragmatic eventration with good muscular lips on right side. The right-sided diaphragmatic eventration was not evident initially, but manifested after surgical repair of the left-sided eventration.