An unusual presentation of emphysematous cystitis.

Emphysematous cystitis is a rare disorder most commonly seen in women and associated with urinary tract infections and poorly controlled diabetes mellitus. We report the case of a 76-year-old woman who presented with diarrhea and abdominal discomfort, and emphysematous cystitis was revealed on the abdominal X-ray series. This case is unique in that the patient had no evidence of urinary tract infection, diabetes, or recent instrumentation. As the patient was treated for emphysematous cystitis (bladder irrigation and intravenous antibiotics), the diarrhea rapidly resolved and the radiographic abnormalities of the emphysematous cystitis also resolved. This may suggest a causal relationship, although a specific mechanism is unknown.