Endobiliary Radiofrequency Ablation for Malignant Biliary Obstruction Due to Perihilar Cholangiocarcinoma

This trial is studying whether adding a heat-based treatment called endobiliary radiofrequency ablation (burning the tumor from inside the bile duct using a special probe) helps people with a type of inoperable bile duct cancer called perihilar cholangiocarcinoma live longer and maintain better drainage. **You may be eligible if...** - You are 18 or older - You have been diagnosed with perihilar cholangiocarcinoma (a cancer at the junction of the bile ducts near the liver) - Your cancer cannot be surgically removed due to spread or location - You need a stent placed to drain your bile duct **You may NOT be eligible if...** - You might be a candidate for surgery to remove the cancer - You are a candidate for liver transplant - Your life expectancy is less than 3 months - You have severe bleeding disorders - You have significant organ failure Talk to your doctor to see if this trial is right for you.