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

Table 3 Comparison of overall survival between the difficult and control groups

Group	Number of patients	Overall survival (%)1
		1-yr	3-yr	5-yr	7-yr
Control	88	92.5	60.3	43.2	32.8
Difficult	382	84.3	54.4	41.2	29.9
Near large vessels or bile ducts	87	86.3	41.4	38.0	33.8
Near peripheral structures	232	82.8	56.9	42.9	28.8
Under liver capsule	63	90.2	69.2	40.1	30.1
Total	470	85.8	56.8	41.6	30.4

¹There was no significant difference in long term survival between the difficult and control groups (P = 0.371).