Table 3 Pathological outcomes

R0 resection (%)^a

53 (96.4)

29 (96.6)

1

Tumor regression grade^a

1 (Residual tumor 0)

11 (20)

6 (20)

0.688

2 (Residual tumor 1–10%)

9 (16.4)

5 (16.7)

3 (Residual tumor 11–50%)

12 (21.8)

4 (13.3)

4 (Residual tumor > 50%)

23 (41.8)

15 (50)

Lymph nodes involved^b

ypN0

38 (69.1)

13 (43.3)

0.021*

ypN+

17 (30.9)

17 (56.7)

ypTNM stage^b

I

27 (49.1)

11 (36.7)

0.088

II

11 (20)

2 (6.7)

III

15 (27.3)

14 (46.6)

IV

2 (3.6)

3 (10)