Safety and Efficacy of Percutaneous Y-configured Covered Stent Placement for Malignant Hilar Biliary Obstruction: A Prospective, Pilot Study

Preliminary results suggest that percutaneous palliative treatment of malignant hilar biliary obstruction with Y-configured covered stents is safe and clinically effective in achieving internal biliary drainage. Y-configured, ePTFE-covered stents can also prevent tumor ingrowth without functional occlusion of hepatic segmental bile ducts.