Table 1 Clinicopathological characteristics of 142 patients

Sex, male/female

79/63

40/31

39/32

Age (years), mean ± SD

55.4 ± 14.4

55.6 ± 14.3

55.3 ± 14.6

KPS, mean ± SD

70.4 ± 6.3

70.1 ± 5.7

70.6 ± 6.8

 Well differentiated

3

2

1

 Moderately differentiated

104

54

50

 Poorly differentiated

22

9

13

 Unknown

13

6

7

TNM stage (III/IV)

98/54

41/30

47/24

 ≤ 3

32

19

15

 4–6

33

18

16

 > 6

44

21

24

Radiotherapy (yes/no)

49/93

22/49

27/44