Staging systems for predicting survival of patients with hepatocellular carcinoma after surgery

Table 1 Definition and criteria of Chinese staging system for hepatocellular carcinoma (1999)

Stage	Tumor	Thrombi	CLN metastasis	Distant metastasis	Child-Pughscore
Ia	Solitary ≤ 3 cm	No	No	No	A
Ib	Solitary or two ≤ 5 cm in single lobe	No	No	No	A
IIa	Solitary or two ≤ 10 cm in single lobe, or two ≤ 5 cm in bilateral lobes	No	No	No	A
IIb	Solitary or two > 10 cm in single lobe, or two > 5 cm in bilateral lobes	No	No	No	A
	Any	PV-branch, HV or BD	No	No	A
	Any	No	No	No	B
IIIa	Any	PV-trunk or IVC	Yes/No	Yes/No	A/B
	Any	Yes/No	Yes	Yes/No	A/B
	Any	Yes/No	Yes/No	Yes	A/B
IIIb	Any	Yes/No	Yes/No	Yes/No	C

CLN: Celiac lymph nodes; PV: Portal vein; HV: Hepatic vein; BD: Bile duct; IVC: Inferior vena cava.