label: Stage I Hilar Cholangiocarcinoma AJCC v7
label_lc: stage i hilar cholangiocarcinoma ajcc v7
description: "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. (from AJCC 7th Ed.)"