Which postnatal finding commonly prompts evaluation for diaphragmatic hernia?

• A. A scaphoid abdomen
• B. A barrel-shaped chest
• C. Pink, well-ventilated lungs
• D. Normal breath sounds

Answer: (A)

A scaphoid abdomen signals diaphragmatic hernia in a newborn because abdominal organs herniate into the chest, pulling contents away from the abdomen and making the abdomen appear sunken. This displacement is a classic clue that prompts further evaluation for a diaphragmatic defect, as it reflects the chest–abdomen imbalance caused by herniation. The lungs are often underdeveloped (pulmonary hypoplasia) due to thoracic compression, which contributes to respiratory distress, but the most striking initial finding is the unusually quiet or sunken abdomen. In contrast, a barrel-shaped chest, pink and well-ventilated lungs, or normal breath sounds would not typically raise concern for diaphragmatic hernia and are more suggestive of other patterns of lung development or air exchange.