This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "A neonate with a scaphoid abdomen and respiratory distress has - \nSelect and explain. \nA. Congenital pyloric stenosis, B. Diaphragmatic hernia, C. Volvulus, D. Wilm's tumor", 'role': 'user'}, {'content': "Answer: B \nExplanation: In congenital 'aphragmatic hernia, there is herniation of intraabdominal contents into the chest. It is also associated with pulmonary hypoplasia and pulmonary hypertension.\nThe infant presents with respiratory distress and a scaphoid abdomen.\nThose with large defects are symptomatic in the delivery room, with tachypnea, grunting respirations, retractions and cyanosis. Those with smaller defects, symptoms may appear months later.", 'role': 'assistant'}]