[Biliary-digestive fistula with gallstone ileus--a sonographic diagnosis].

We demonstrate a patient with a fistula between the gallbladder and the small intestine combined with a gallstone ileus of the small bowel, diagnosed by ultrasound. Plain abdominal X-ray only revealed small bowel obstruction. All the typical diagnostic criteria of a biliodigestive fistula could be detected by ultrasound. The patient was operated and discharged a few days later. We demonstrate that biliodigestive fistulas can be diagnosed by ultrasound.