[Dilemmas in biliary tract surgery].

Operations on the biliary system rank among the most frequent abdominal surgical procedures. Discovery of the chenodeoxycholic acid brought about no changes in treatment of cholelithiasis. The paper deals with the problems of residual stones, injuries to the hepatic artery and bile ducts, surgical treatment of stenosis of the bile ducts, cholecystitis, cholangitis and papila of Vater conditions. Since the paper is conceived as a basis for the round table duscussion, it only indicates the issues to be dealt with.