[Ligature with insoluble material as a cause of formation of bile duct calculi].

The author reports 5 observations on formation of secondary concretions in bile ducts due to getting into the latter silk, capron and lavsan ligatures put on the vesical duct stump or the common bile duct wall. A running suture from the unresolved material proved to be most hazardous in this respect. Sutures from slowly resolving materials such as chromisized catgut best of all meet the requirements of surgical procedures on bile ducts.