Prognosis of hepatocellular carcinoma accompanied by microscopic portal vein invasion

Table 1 Univariate analysis of clinicopathological prognostic factors for cumulative survival rate

Factors	Survival rate (%)			P value
	1 yr	3 yr	5 yr
Age (yr)
< 67 (n = 27)	80.6	60.4	42.1	0.9546
≥ 67 (n = 28)	96.6	75.7	50.0
Gender
Male (n = 41)	92.6	72.3	45.2	0.7614
Female (n = 14)	78.6	50.0	42.9
Platelets (104/mm3)
< 1.5 (n = 27)	92.6	61.7	46.6	0.7341
≥ 1.5 (n = 28)	85.7	67.5	46.0
Albumin (g/dL)
< 3.9 (n = 27)	100	76.9	47.2	0.6123
≥ 3.9 (n = 28)	79.0	56.8	47.5
Tumor size (cm)
< 4.3 (n = 27)	92.4	72.8	35.9	0.8752
≥ 4.3 (n = 28)	85.7	60.7	52.0
AFP (ng/mL)
0-27 (n = 28)	96.4	71.3	55.4	0.1001
> 27 (n = 27)	81.2	61.6	35.8
DCP (mAU/mL)
0-300 (n = 18)	94.1	75.1	75.1	0.1834
≥ 300 (n = 18)	83.3	55.6	55.6
Operative procedure
Anatomical resection (n = 32)	90.5	74.2	51.4	0.0620
Non-anatomic resection (n = 23)	87.0	55.9	39.5
Tumor grade of differentiation
Moderate (n = 38)	97.3	70.0	54.9	0.1076
Poor (n = 17)	70.6	58.8	30.3
IM (-) (n = 31)	96.8	66.7	56.5	0.2625
IM (+) (n = 24)	79.2	66.7	32.8
PVI-S (n = 44)	97.7	76.5	51.2	0.0019
PVI-M (n = 11)	54.5	27.3	27.3

IM: Intrahepatic metastasis.