This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Imaging of Alveolar Lung Disease, Subject name: Radiology
A neonate suffering from respiratory distress, chest x- ray showing multiple air filled spaces, the DD is A/E : 
Select and explain. 
A. Congenital lobar aplasia of lung., B. Congenital lung cysts, C. Congenital adnomatoid malformation, D. Congenital diaphragmatic hernia
A: Congenital lobar aplasia of lung.
Answer: A: Congenital lobar aplasia of lung. 
Explanation: Ans. is 'a' i.e. congenital lobar aplasia of lung All the given options are cause of respiratory distress in a neonate. All except labor aplasia of lung show multiple air filled spaces on chest x-ray.