Stage I Intrahepatic Bile Duct Cancer AJCC v8

**Semantic type:** Neoplastic Process

**Definition:** Stage I includes: IA (T1a, N0, M0); IB (T1b, N0, M0). T1a: Solitary tumor equal to or less than 5 cm without vascular invasion. T1b: Solitary tumor larger than 5 cm without vascular invasion. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th ed.)

**Synonyms:** - Stage I Intrahepatic Bile Duct Cancer - Stage I Intrahepatic Bile Duct Carcinoma AJCC v8