Radiofrequency ablation of hepatocellular carcinoma in difficult locations: Strategies and long-term outcomes

Table 4 Comparison of local progression-free survival between the difficult and control groups

Group	Number of patients	Local progression-free survival (%)1
		1-yr	3-yr	5-yr	7-yr
Control	88	88.2	55.6	36.3	36.3
Difficult	382	77.9	49.0	38.0	29.1
Near large vessels or bile ducts	87	81.7	35.6	33.4	30.7
Near peripheral structures	232	77.3	48.7	38.6	27.2
Under liver capsule	63	80.5	53.1	37.8	28.1
Total	470	79.8	50.3	37.5	29.8

¹There was no significant difference in local progression-free survival between the difficult and control groups (P = 0.584).