Imaging diagnosis - Ultrasound: 97% of patients with PVT, including: 56.1% of major trunk, 66.3% of right branch; 6, 1% of left branch, 27.6% of both 2 branch; 12.2% of angiogenesis; mean thrombosis size was 1.58 ± 0.39 cm, in which 5.1% of <1 cm, 82.7% of 1 - 2 cm, and 12.2% 2 cm - Computed tomography scan: Recognized PVT was 81, 2% (in which, 3 cases were not diagnosed by ultrasound), including: 49.1% of major trunk, 68.3% of right branch, 8.5% left branch, 23.2% of both 2 branch; 12.2% of PVT with angiogenesis Mean PVT size was 1.56 ± 0.37 cm, in which, 6.1% of <1 cm, 84.1% of 1 - 2 cm, and 9.8% of >2 cm - The relationship between location of PVT and liver tumor was statistical significance (p<0.05).