Stage IIIB Hilar Cholangiocarcinoma AJCC v8

**Semantic type:** Neoplastic Process

**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.)

**Synonyms:** - IIIB - Stage IIIB Hilar Cholangiocarcinoma - Stage IIIB Perihilar Cholangiocarcinoma AJCC v8