Biliodigestive fistula with gallstone ileus - a sonographic diagnosis.

We demonstrate a patient with a fistula between the gallbladder and the sma ll 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 d etected by ultrasound. The patient was operated and discharged a few days l ater. We demonstrate that biliodigestive fistulas can be diagnosed by ultra sound.