Stage III includes: IIIA: (T3, N0, M0); IIIB: (T4, N0, M0); IIIC: (Any T, Any N, M0). IIIA: T3: Multiple tumors more than 5 cm or tumor involving a major branch of the portal or hepatic vein(s). T4: Tumors(s) with direct invasion of adjacent organs other than the gallbladder or with perforation of visceral peritoneum. N0: No regional lymph node metastasis. N1: Regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th ed.) [from NCI]