Table 1 Clinical and demographics data of patients included in the study

N

7

20

7

5

4

Age (years)

58.9 ± 10.9

54.2 ± 13.7

ns

60.4 ± 13.6

59.6 ± 14.5

69.3 ± 15.0

ns

Gender (M/F)

2/5

9/11

ns

3/4

3/2

3/1

ns

Distance anal verge (cm)

4.0 ± 2.6

4.3 ± 2.2

ns

4.6 ± 2.4

2.2 ± 2.8

4 ± 0.8

ns

Tumor size (cm)

4.4 ± 0.8

4.6 ± 1.5

ns

3.6 ± 0.9

5 ± 1.9

5 ± 1.4

ns

Initial staging

ns

ns

T2

0

2

4

2

0

T3

7

17

2

2

4

T4

0

1

1

1

0

N0

4

7

2

2

2

N+

3

13

5

3

2

Staging after CRT

cCR

3

-

6

-

4

pCR

4

-

1

-

-

ypT2

-

6

-

1

-

ypT3

-

13

-

4

-

ypT4

-

1

-

0

-

ypN0

-

12

-

1

-

ypN+

-

8

-

2

-

ypNx

-

0

-

2

-