Skip to main content

Table 2 Surgery and histopathologic parameters

From: Reduced toxicity in the treatment of locally advanced rectal cancer: a comparison of volumetric modulated arc therapy and 3D conformal radiotherapy

Characteristic

3D conformal radiotherapy

Volumetric modulated arc therapy

p

No.

%

No.

%

OP-method

 Low anterior resection

68

64

55

68

0.5356

 Abdominoperineal resection

39

36

26

32

Distance from anal verge 0 to <6 cm, sphincter-saving surgery

 Yes

9

23

11

31

0.3830

 No

31

77

24

69

R-status

 0

104

97

79

98

0.5330

 1

1

1

2

2

 2

1

1

0

0

 X

1

1

0

0

ypT-stage

 0

14

13

16

20

0.1397

 1

11

10

5

6

 2

34

32

25

31

 3

42

39

35

43

 4

6

6

0

0

ypN-stage

 0

69

65

57

70

0.5492

 1

27

25

15

19

 2

11

10

9

11

Tumor regression grading

 0 no regression

0

0

1

1

0.1727

 1 minor regression

12

11

9

11

 2 moderate regression

34

32

32

40

 3 good regression

47

44

23

28

 4 total regression

14

13

16

20

  1. The Chi-Square test and the Krusal-Wallis test were used for group comparisons
  2. Abbreviations: R-status resection status, ypT tumor stage after preoperative radiochemotherapy, ypN nodal stage after preoperative radiochemotherapy