This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Imaging of Interstitial Lung Disease, Subject name: Radiology
[{'content': 'CXR of a patient is shown. What is the next investigation to be done in the patient? \nSelect and explain. \nA. Ventilation perfusion scan, B. Bronchoalveolar lavage, C. Exploratory laparotomy, D. High resolution CT scan', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Exploratory laparotomy.Image shows Chest X-ray with central trachea and increased bronchovascular markings. The Right lung shows clear presence of gas under diaphragm and needs an exploratory laparotomy.', 'role': 'assistant'}]