NCIt related terms : Stage IIIB Hilar Cholangiocarcinoma; IIIB;
NCIt definition : Stage IIIB includes: T4, N0, M0. T4: Tumor invading the main portal vein or its branches
bilaterally, or the common hepatic artery; or unilateral second-order biliary radicals
with contralateral portal vein or hepatic artery involvement. N0: No regional lymph
node metastasis. M0: No distant metastasis. (AJCC 8th ed.);