Late‐appearing diaphragmatic hernia following resolution of right pleural effusion

A case of late‐appearing congenital diaphragmatic hernia in a premature infant with previously normal chest X‐ray is reported. Pleural effusion accumulation and resolution preceded herniation of the liver to the right hemithorax and development of respiratory symptoms. Chest X‐ray, ultrasound and computed tomography of the chest were useful in establishing the correct diagnosis. Pleural effusion without obvious cause should alert the paediatrician to the possibility of this rare condition.