Stage I Gallbladder Cancer AJCC v6

**Semantic type:** Neoplastic Process

**Definition:** Stage I includes: IA: (T1, N0, M0); IB: (T2, N0, M0). T1: Tumor invades lamina propria or muscle layer. T1a: Tumor invades lamina propria. T1b: Tumor invades muscle layer. N0: No regional metastasis. M0: No distant metastasis. (AJCC 6th ed.)

**Synonyms:** - Gallbladder Cancer Stage I AJCC v6 - Gallbladder Carcinoma Stage I AJCC v6 - Stage I Carcinoma of Gallbladder AJCC v6 - Stage I Carcinoma of the Gallbladder AJCC v6 - Stage I Gallbladder Cancer - Stage I Gallbladder Carcinoma AJCC v6 - stage IA gallbladder cancer - stage IB gallbladder cancer