Table 3 Histopathology after neoadjuvant chemotherapy
Parameter | Median (range) | n = 30 | % |
|---|---|---|---|
ypT-category | |||
 ypT0 |  | 2 | 7 |
 ypT1 | 2 | 7 | |
 ypT2 | 1 | 3 | |
 ypT3 | 21 | 70 | |
 ypT4a | 3 | 10 | |
 ypT4b | 1 | 3 | |
Number of removed lymph nodes | 43 (21–113) |  | |
ypN-category | |||
 ypN0 |  | 10 | 33 |
 ypN1 | 5 | 17 | |
 ypN2 | 7 | 23 | |
 ypN3 | 8 | 27 | |
 ypN3 (AEG) | 3 | 10 | |
 ypN3a (GC) | 4 | 14 | |
 ypN3b (GC) | 1 | 3 | |
Tumor regression grading | |||
 Complete regression (Ia) |  | 2 | 7 |
  <  10% residual tumor (Ib) | 9 | 30 | |
  ≥ 10% and < 50% residual tumor (II) | 6 | 20 | |
  ≥ 50% residual tumor (III) | 8 | 27 | |
 no regression (IV) | 5 | 16 | |
Modified tumor regression grading | |||
 Minor (grade II - IV, ≥ 10% residual tumor) |  | 19 | 63 |
 Major (grade Ia - Ib, <  10% residual tumor) | 11 | 37 | |