Fig. 5

Kaplan–Meier curves for patients with hilar cholangiocarcinoma according to each classification system. A Bismuth-Corlette classification system. B 8th AJCC TNM system. C MSKCC T staging system. D 3DVE classification system. Note. 1 patient loosed to follow up. Classifications of 2 patients were not defined in AJCC TNM staging system (8th edition). Classification of 1 patient was not defined in MSKCC T staging system