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: Radiology
[{'content': 'Hyperinflation of lung in CXR is seen in? \nSelect and explain. \nA. CCF, B. Congenital lobar emphysema, C. Diaphragmatic hernia, D. Foreign body', 'role': 'user'}, {'content': "Answer: B \nExplanation: B i.e. Congenital lobar emphysema Hyperansradiant (Radiolucent) lung on CXR is seen in EmphysemaQ - Pulmonary embolism - Pneumothorax - Polland's syndrome - Patient rotation - Macleod syndrome", 'role': 'assistant'}]