RESUMO
Malignant biliary obstruction is often in an advanced stage at the time of diagnosis, and palliative relief of obstruction has become the main treatment option. Biliary stent implantation is currently the most widely used treatment for the relief of biliary obstruction, but stent reobstruction has become a common problem in clinical practice. Endoscopic retrograde cholangiopancreatography (ERCP) combined with intraductal radiofrequency ablation can solve the problem of direct obstruction in malignant biliary obstruction and improve stent patency rate, survival time, and survival rate, with few complications and a low surgery-related mortality rate, and therefore, it can be used as a safe and feasible palliative treatment method for malignant biliary obstruction.