Table 1.

Baseline characteristics (N = 149)

	N	%
Age
Median (range)	62 (30–80)
<65 years	90	60.4
≥65 years	59	39.6
Sex
Male	87	58.4
Female	62	41.6
Timing of metastases
Metachronous	55	36.9
Synchronous	94	63.1
Number of metastasesa
1–2	88	59.5
>2	60	40.5
Size of metastasesa
1–50 mm	127	85.8
>50 mm	21	14.2
Distribution of metastases
Unilobar	76	51.0
Bilobar	73	49.0
Primary tumor sitea
Right colon	39	26.4
Left colon	60	40.5
Rectum	49	33.1
KRAS status
Wild-type	97	66.9
Codons 12, 13 or 61 mutant	48	33.1

^aOne patient had missing information.