Table 1 The baseline characteristics of included patients

Patient number

20

6

12

Age, year

67.5 ± 10.4

67.5 ± 10.9

67.5 ± 10.2

Male, n (%)

15 (75%)

3 (50%)

10 (83.3%)

Tumor distance

5.3 ± 1.5

5.8 ± 1.9

5.1 ± 1.4

Tumor length

5.1 ± 1.3

4.5 ± 1.0

5.2 ± 1.1

Clinical T stage

T3

13

4

8

T4

7

2

4

Clinical N stage

N1

6

2

4

N2

14

4

8

TRG

0

4

4

-

1

2

2

-

2

10

-

10

3

2

-

2