Table 1.

Baseline Clinical Characteristics of the Patients Before Ablation (n = 80).

Factors	N (%)
Age (year)	59 ± 10.98 (24-82)
≤60	39(48.75)
> 60	41(51.25)
Gender
Male	52(65.00)
Female	28(35.00)
Primary tumor site
Rectum	34(42.50)
Colon	46(57.50)
Primary tumor differentiation
Medium	58(72.50)
Poor	22(27.50)
Lymph node metastases
No	35(43.75)
Yes	45(56.25)
Primary tumor Ki67 status
≤ 50%	7(21.21)
> 50%	26(78.79)
Liver metastases
Synchronous	36(45.00)
Metachronous early (≤ 12 mo)	19(23.75)
Metachronous late (> 12 mo)	25(31.25)
Preablation treatment
Chemotherapy	33(41.25)
No	47(58.75)
Extrahepatic metastases
No	52(65.00)
Yes	28(35.00)
CEA level before ablation ng/mL
≤ 30	52(65.00)
> 30	28(35.00)
Preablation lesion size	2.5 ± 1.2
≤30	54(67.50%, n = 93)
>30	26(32.50%, n = 32)
Metastases number
≤2	58(72.50)
>2	22(27.50)
Subsequent chemotherapy
No	23(28.75)
Yes	57(71.25)