[Arterial and venous fistulas of duodenal-biliary zone].
Causes of gastrointestinal bleedings in patients treated from 1995 to 2001 were analyzed. Rare causes of bleeding were studied particularly. Four cases of patients hospitalized urgently for gastrointestinal bleeding are described in detail. In autopsy of these patients different variants of vascular fistulas of duodenobiliary zone were revealed: fistula of aneurysm of abdominal aorta with blood bursting into horizontal part of the duodenum (2 cases), fistula between diverticulum of proximal part of jejunum and abdominal aorta (1), choledochoportal fistula (1). Clinical and anatomical correlations differential-diagnostic difficulties were analyzed.