title: Spherical pneumonias in children simulating pulmonary and mediastinal masses.
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging*; D011014:Pneumonia / Q000000981:diagnostic imaging* / Q000188:drug therapy; D011859:Radiography
chemical_list: D000900:Anti-Bacterial Agents