Combined T/Y biliary stent placement for the treatment of biliary obstruction caused by Bismuth-Corlett type IV hilar cholangiocarcinoma.

Background/aims: To assess the feasibility and efficacy of combined T/Y biliary stent for the bilateral drainage of biliary obstruction caused by Bismuth-Corlett type IV hilar cholangiocarcinoma.

Methodology: Eleven patients with unresectable malignant hilar biliary obstruction of Bismuth-Corlett type IV underwent placement of combined T/Y biliary stent. After unilateral or bilateral percutaneous transhepatic cholangiography, “T” or “Y” type combined biliary metal stents were placed based on the intersection angle of the left and right intrahepatic bile ducts.