Modified T category for early-staged intrahepatic cholangiocarcinoma: inclusion of perineural invasion

Tao Wei, Matthew Weiss, Mujtaba Khalil, Irinel Popescu, Hugo P. Marques, Luca Aldrighetti, Shishir K. Maithel, Carlo Pulitano, Todd W. Bauer, Feng Shen, George A. Poultsides, Oliver Soubrane, Guillaume Martel, Bas Groot Koerkamp, Endo Itaru, Yi Lyu, Xu-Feng Zhang, Timothy M. Pawlik