Surgery for colorectal liver metastases: The evolution of determining prognosis

Table 2 Survival based on the clinical risk cumulative score (adapted from Fong et al[9])

Cumulative score	1 yr	2 yr	3 yr	4 yr	5 yr	Median, mo
0	93	79	72	60	60	74
1	91	76	66	54	44	51
2	89	73	60	51	40	47
3	86	67	42	25	20	33
4	70	45	38	29	25	20
5	71	45	27	14	14	22
Prognostic factor	Score 0	Score 0	Score 0	Score 1	Score 1	Score 1
Node-positive primary	negative	negative	negative	positive	positive	positive
Disease-free interval	≥ 12 mo	≥ 12 mo	≥ 12 mo	< 12 mo	< 12 mo	< 12 mo
Number of liver metastases	1	1	1	> 1	> 1	> 1
Size of major liver metastases	≤ 5 cm	≤ 5 cm	≤ 5 cm	> 5 cm	> 5 cm	> 5 cm
CEA (ng/mL)	< 200 ng/mL	< 200 ng/mL	< 200 ng/mL	> 200 ng/mL	> 200 ng/mL	> 200 ng/mL

CEA: Carcinoembryonic antigen.