Expression of caspase-3 and hypoxia inducible factor 1α in hepatocellular carcinoma complicated by hemorrhage and necrosis

Table 1 Clinical material of patients

Clinicopathological feature	Cases
Age (yr)
≤ 50	45
> 50	43
Sex
Male	45
Female	43
Tumor diameter
< 5 cm	50
≥ 5 cm	38
TNM stage
I-II	52
III	36
Differentiation degree
High differentiation	32
Medium/low differentiation	56
Lymph node metastasis
Yes	40
No	48
Hepatitis B surface antigen positivity
Yes	72
No	16
Portal vein tumor thrombus
Yes	50
No	38