Stage I Hilar Cholangiocarcinoma AJCC v8

**Semantic type:** Neoplastic Process

**Definition:** Stage I includes: T1, N0, M0. T1: Tumor confined to the bile duct, with extension up to the muscle layer or fibrous tissue. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th ed.)

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