New milestone for clinical research about biliary drainage.

The article discusses the advancements in clinical research on biliary drainage, particularly focusing on the criteria for evaluating the outcomes of bile duct stents. It highlights the need for common definitions regarding procedure-related outcomes, stent dysfunction, and adverse events. The new TOKYO criteria, recently revised after a decade, categorize indications into obstructive jaundice and cholangitis, redefine terms related to biliary drainage, and emphasize the importance of clinical success in biliary treatment using stents. The article aims to provide a comprehensive framework for assessing biliary drainage outcomes and encourages further research in this field. [Extracted from the article]