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Table 2 AJCC 8th Edition Staging System for Hepatocellular carcinoma

From: Investigation on returning to work in liver cancer survivors in Taiwan: a 5-year follow-up study

Primary tumor (T) Regional lymph nodes (N) Distant metastases (M)
T1a Solitary tumor < 2 cm with/without vascular invasion Nx Regional lymph nodes cannot be assessed M0 No distant metastasis
T1b Solitary tumor > 2 cm without vascular invasion N0 No regional lymph node metastasis M1 Distant metastasis
T2 Solitary tumor > 2 cm with vascular invasion or multifocal tumors, none > 5 cm N1 Regional lymph node metastasis   
T3 Multifocal tumors at least one of which is > 5 cm   
T4 Single tumor or multifocal tumors of any size involving a major branch of the portal vein or hepatic vein or tumor(s) with direct invasion of adjacent organs other than the gallbladder or with perforation of visceral peritoneum
Stage IA T1a N0 M0  
Stage IB T1b N0 M0
Stage II T2 N0 M0
Stage IIIA T3 N0 M0
Stage IIIB T4 N0 M0
Stage IVA Any T N1 M0
Stage IVB Any T Any N M1