A rare association of congenital diaphragmatic eventration in complex cyanotic heart defect: Should we miss?

Congenital diaphragmatic eventration is relatively uncommon. The association with congenital cyanotic heart defect is even more uncommon. The identification of these conditions at an early stage is a significant challenge due to the similarities in symptoms exhibited by cyanotic heart disease and diaphragmatic eventration. We present a case of a two-year-old child with an underlying Ebstein anomaly, pulmonary atresia, and ventricular septal defect. Despite a few previous hospitalizations due to the underlying cardiac defect, the child was diagnosed with left diaphragmatic eventration at the age of 13 months. A decision was made to perform diaphragmatic plication before cardiac surgery following a multidisciplinary team discussion to optimize lung function and prevent complications after cardiac surgery.