Treatment efficacy of radiofrequency ablation of 338 patients with hepatic malignant tumor and the relevant complications

Table 1 Therapeutic results of 338 patients after radio-frequency ablation

Tumor	No. of	No. of	Tumor size1	No. of tumors completely	No. of local
type	patients	tumors	(cm)	ablated2 (%)	recurrence (%)
HCC	204	430	4.0 (1.2-10.8)	401 (93.3)	34 (7.9)
MLC	134	333	4.1 (1.0-10)	322 (96.7)	35 (10.5)
Total	338	763	4.1 (1.0-10.8)	723 (94.8)	69 (9.0)

¹The largest average diameter of the tumors.

²The ablation was considered a success, if the 1 mo CT scan showed no contrast enhancement detected within or around the tumor.

Table 2 The comparison of survival rates of 300 patients with malignant liver tumor after RFA

	Survival rate
Tumor type	1 yr	2 yr	3 yr
MLC (n = 125)	75.3	50.2	25.1
HCC (n = 175)b	84.6	66.6	63.1
Stages I–II (n = 48)bd	93.7	80.4	80.4
Stages III–IV (n = 127)a	81.3	61.7	57.2
Total (n = 300)	80.6	60.1	50.4

^aP<0.05,

^bP<0.01 vs MLC;

^dP<0.01 vs HCC of stages III–IV , P<0.01.