Preoperative biliary drainage in hilar cholangiocarcinoma: When and how?

Figure 1 Forty-nine-year-old female with Bismuth type IIIB hilar cholangiocarcinoma. Since contrast media were injected into both intrahepatic biliary ducts, bilateral endoscopic nasobiliary drainage was performed to prevent post-procedural cholangitis (Black arrows indicate the tip of nasobiliary tubes).