title: Emphysematous cholecystitis presenting with pneumoperitoneum.
mesh_terms: D000368:Aged; D002764:Cholecystitis / Q000150:complications / Q000000981:diagnostic imaging*; D002765:Cholecystography; D004646:Emphysema / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male