Endoscopic biliary drainage (EBD) for hepatic hilar obstruction is sometimes challenging. Moreover, when unilateral biliary drainage has already been performed, if another intrahepatic bile duct also needs to be drained, EBDmay be mademore difficult because of tumor ingrowth and the narrowed angle from which the bile duct must be accessed. In this case, percutaneous biliary drainage (PTBD) or e...
