Parameter

N

%

Age, years

Median (range)

79 (75 - 88)

Gender

Male

Female

25

25

50

50

ECOG PS

0

1

28

22

56

44

Primary tumor site

Right sidea

Left sideb

15

35

30

70

Surgery on primary tumor

Yes

39

78

Metastatic organ site

Liver

Lung

Peritoneum

Lymph node

Others

28

19

15

11

12

56

38

30

22

24

Number of metastatic organ site

1

2

≥3

26

17

7

52

34

14