This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pneumonia, Subject name: Medicine
Comment on the first differential diagnosis of the CXR of a 50-year-old patient with cough for 2 weeks. 
Select and explain. 
A. Round pneumonia, B. Lung abscess, C. Asbestosis coin lesion, D. Pulmonary hamaoma
A: Round pneumonia
Answer: A: Round pneumonia 
Explanation: Given X ray suggests diagnosis of round pneumonia- caused by Pneumococcus Lung abscess - air fluid level with pus settling at the bottom Asbestosis coin lesion - present with occupational history. Pulmonary Hamaoma - popcorn appearance on CXR