title: Empyema caused by Clostridium perfringens.
mesh_terms: D000368:Aged; D003015:Clostridium Infections / Q000150:complications* / Q000188:drug therapy; D003016:Clostridium perfringens / Q000302:isolation & purification*; D004653:Empyema / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000209:etiology*; D004926:Escherichia coli / Q000302:isolation & purification; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D010400:Penicillin G / Q000627:therapeutic use; D010994:Pleura; D011677:Punctures; D011859:Radiography; D013752:Tetracycline / Q000627:therapeutic use
chemical_list: D013752:Tetracycline; D010400:Penicillin G