Table 1 Patient characteristics diagnostic tumor biopsy studies.

Male

16

10

Female

2

3

Age (years)^a

63 (37–75)

64 (53–75)

Clinical TNM ^b stage

I

0

0

II^a

6

2

II^b

2

2

III

10

9

IV

0

0

TRG ^c

1

3

4

2

5

4

4

8

4

5

2

1

Pathological

Nodal status

1 Patient

1 Patient NS

NS^d

N0^e

7

6

N1^f

10

5