title: I recently recovered from pneumonia. I'm feeling much better, but my doctor still wants me to get a chest X-ray in a few weeks. Why is this necessary?
mesh_terms: D003289:Convalescence; D003937:Diagnosis, Differential; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D011014:Pneumonia / Q000000981:diagnostic imaging*; D011859:Radiography