Portal Vein Stenting Combined with ¹²⁵I Particle Chain Implantation Followed by As₂O₃ in the Treatment of Hepatocellular Carcinoma with Portal Vein Tumour Thrombus

Table 1

Characteristics of patients.

Characteristics
Age, years, median (range)	57 (45–76)
Sex (male/female)	26/4
Number of lesions
Single	14 (47%)
Multiple	16 (53%)
Location of tumour thrombosis
LPVB	4 (13%)
RPVB	6 (20%)
MPV + LPVB	12 (40%)
MPV + RPVB	8 (27%)
Child-pugh class
A	12 (40%)
B	18 (60%)
Degree of PVTT, n (%)
Vp2	6 (20%)
Vp3	14 (47%)
Vp4	10 (33%)

The Liver Cancer Study Group of Japan suggested a macroscopic classification for PVTT, which categorized PVTT into five grades: (1) Vp0, no PVTT; (2) Vp1, presence of PVTT not in, but distal to, the 2^nd order branches of the portal vein; (3) Vp2, presence of PVTT in the 2^nd order branches of the portal vein; (4) Vp3, presence of PVTT in the 1^st order branches of the portal vein; and (5) Vp4, presence of PVTT in the main trunk of the portal vein or a portal vein branch contralateral to the mainly involved lobe (or both). LPVB: left portal vein branch; RPVB: right portal vein branch; MPV: main portal vein; PVTT: portal vein tumour thrombus.