Necrotizing  pneumonitis and empyema due to microaerophilic streptococci.
D000328:Adult; D004653:Empyema / Q000209:etiology*; D006801:Humans; D008875:Middle Aged; D009336:Necrosis; D010400:Penicillin G / Q000627:therapeutic use*; D010403:Penicillin Resistance; D011014:Pneumonia / Q000188:drug therapy / Q000209:etiology*; D013902:Radiography, Thoracic; D013290:Streptococcal Infections / Q000175:diagnosis* / Q000188:drug therapy*
D010400:Penicillin G