label: Stage I Extrahepatic Bile Duct Cancer
label_lc: stage i extrahepatic bile duct cancer
description: "Stage I includes: IA: (T1, N0, M0); IB: (T2, N0, M0).  T1: Tumor confined to the bile duct histologically.  T2: Tumor invades beyond the wall of the bile duct.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th ed.)"