title: [Clinical picture of acute phase of unresolved pneumonia].
mesh_terms: D000208:Acute Disease; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011014:Pneumonia / Q000000981:diagnostic imaging* / Q000188:drug therapy; D011859:Radiography