NCIt related terms : Stage IIB Gallbladder Cancer;
NCIt definition : Stage IIB includes: T2b, N0, M0. T2b: Tumor invading the perimuscular connective tissue
on the hepatic side, with no extension into the liver. N0: No regional lymph node
metastasis. M0: No distant metastasis. (AJCC 8th ed.);