Stage IVA Gallbladder Cancer AJCC v8

**Semantic type:** Neoplastic Process

**Definition:** Stage IVA includes: T4, N0-1, M0. T4: Tumor invading the main portal vein or hepatic artery or invading two or more extrahepatic organs or structures. N0: No regional lymph node metastasis. N1: Metastases to one to three regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)

**Synonyms:** - Stage IVA Gallbladder Cancer - Stage IVA Gallbladder Carcinoma AJCC v8