This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pleural Effusion & Pneumothorax, Subject name: Medicine
Diagnosis on CXR is? 
Select and explain. 
A. Congenital diaphragmatic hernia, B. Bochdalek hernia, C. Pneumothorax, D. Pneumo-mediastinum
D: Pneumo-mediastinum
Answer: D: Pneumo-mediastinum 
Explanation: Ans. (d) Pneumo mediastinumIn the area of arrows a continuous diaphragm sign is noted. Normally diaphragm is seen below lungs only. This kind of presentation is noted in pneumo-mediastinum.