[Surgical treatment of extrahepatic biliary lithiasis and Kehr's tube. Indications].

The paper outlines the indications for the use of Kehr's tube in the surgical management of extra-hepatic biliary lithiasis by reporting the authors' personal experience relating to the period 1988-1992. In line with data reported in the literature the paper emphasizes the value of Kehr's tube not only in those cases where it is necessary to prevent choledochotomy and radiological control, but above all were the postoperative possibility of removing any residual calculi using litholytic, endoscopic or lithotripsic methods, is of prime importance.