Prognostic Factors of Radiofrequency Ablation plus Systemic Chemotherapy for Unresectable Colorectal Cancer with Liver Metastasis

Table 1

Baseline characteristics of study participants ().

Variables	(%)
Male	49 (80.3)
Mean age (years)	(27-75)
ECOG
0	25 (41)
1	36 (59)
Primary cancer
Colon	24 (39.3)
Rectum	37 (60.7)
Type of metastasis
Synchronous	24 (39.3)
Metachronous	37 (60.7)
Adjuvant chemotherapy for primary cancer
Yes	29 (47.5)
No	32 (52.5)
Number of liver metastatic tumors	166 (/patient)
1–3	41 (67.2)
4–5	20 (32.8)
Size of the largest liver lesion
≤3 cm	21 (34.4)
> 3 cm	40 (65.6)
Sum of lesion diameters	^†
<5 cm	26 (42.6)
5–10 cm	21 (34.4)
>10 cm	14 (23.0)
Serum CEA
≤30 ng/mL	40 (65.6)
>30 ng/mL	21 (34.4)

ECOG: Eastern Cooperative Oncology Group. Total number of liver metastatic lesions. ^†Mean sum of tumor diameters in a patient.