Evaluation of UICC-TNM and JSBS staging systems for surgical patients with extrahepatic cholangiocarcinoma

Aim Two staging systems exist to classify extrahepatic cholangiocarcinoma (EHC), the TNM staging of the International Union Against Cancer (UICC) and the classification system of the Japanese Society of Biliary Surgery (JSBS). This study sought to evaluate the utility of these two staging systems.