G1

N = 64

G2

N = 136

G3

N = 201

P value

Mean age (years ± SD)

46.7 ± 12.65

51.6 ± 13.03

56.3 ± 13.58

<0.001

General condition (WHO), n (%)

0

43 (67)

71 (52)

58 (28.9)

1

20 (31)

53 (39)

107 (53.2)

<0.001

2

1 (2)

5 (4)

24 (11.9)

≥3

0

7 (5)

12 (6)

Metastases, n (%)

Metachronous

28 (44.3)

82 (60.3)

62 (30.8)

<0.001

Synchronous

36 (55.7)

54 (39.7)

139 (69.2)

Mean time of occurrence of metastases (months ± SD)

14.1 ± 12.25

12.5 ± 12.04

18.9 ± 13

<0.001

Localizations of metastases, n (%)

Liver

28 (44.1)

71 (52)

144 (71.6)

Lung

2 (3.4)

6 (4.6)

45 (22.4)

<0.001

Peritoneum

15 (23.7)

21 (15.3)

42 (20.9)

Ovary

1 (1.7)

2 (1.5)

25 (12.4)

Others

18 (27.1)

36 (26.6)

Normal liver function tests, n (%)

Yes

45 (70.2)

110 (81.3)

136 (67.6)

0.1

No

16 (25.5)

23 (16.4)

22 (10.9)

Not specified

3 (4.3)

3 (2.3)

43 (21.5)

Normal initial level of CEA n (%)

Yes

38 (60)

80 (59.1)

64 (31.8)

0.01

No

26 (40)

54 (39.9)

92 (45.8)

Not specified

0

2 (1)

45 (22.4)