Table 1 demographic and tumor data

No. pts

51

33

mean age ± SD

62.55 ± 12.22

60.88 ± 14.46

0.571 *

male-to-female ratio(male/female)

34cases/17cases

22cases/11cases

>0.999 *

mean body height ± SD (cm)

162.7 ± 8.9

162.8 ± 11.1

0.952 **

mean body weight ± SD (kg)

64.6 ± 14.6

58.1 ± 12.2

0.0395 **

mean BMI ± SD

24.3 ± 3.85

21.9 ± 3.58

0.0055 **

preoperative tumor diameter ± SD(mm)

40.5 ± 12.6

40 ± 11.7

0.861 *

laterality (left/right)

26/25

16/17

>0.999 *