Tumor invasion loci in resected margins of perihilar cholangiocarcinoma and their impact on survival: a retrospective 13-year longitudinal cohort study. - Kovalenko, Yury; Olifir, Anna; Glotov, Andrei; Popov, Anatoly; Trifonov, Sergey; Blagovestnov, Dmitry; Shevchenko, Tatyana; Gurmikov, Beslan; Loginova, Nina; Zharikov, Yury (World Journal of Surgical Oncology, 2025)