[Undeveloped high intestinal fistulas as an urgent problem of modern surgery].

Eighty-two cases of un formed high intestinal fistulas are analyzed. Degree of non-formation and volume of chymus loss are the main criteria determining treatment policy. Early surgery (one or two-sided switching of fistulas zone) is indicated in intestinal loss more then 600-700 ml per day or in complete fistula. Mezonnes surgery was un effective in the majority of cases. Special policy including trunk vagotomy, antrumectomy and plastic repair of the duodenal bulb permitted in the last years to avoid duodenal fistulas in the treatment of ulcer disease.