Table 5.
Distribution of pathologic response and stage after surgery.
| IFI (n=102) | ENI (n=165) | p-value | |
|---|---|---|---|
| n (%) | n (%) | ||
| Tumor regression grade | |||
| 0 | 52(51) | 69(41.8) | .144 |
| 1 | 15(14.7) | 31(18.8) | .391 |
| 2 | 33(32.4) | 56(33.9) | .789 |
| 3 | 2(2) | 9(5.5) | .163 |
| Pathologic stage† | |||
| I | 58(56.9) | 84(50.9) | .343 |
| II | 12(11.8) | 22(13.3) | .709 |
| IIIA | 14(13.7) | 22(13.3) | .927 |
| IIIB | 17(16.7) | 33(20) | .498 |
| IVA | 1(1) | 4(2.4) | .398 |
| pCR | 43(42.2) | 57(34.5) | .212 |
| ypT0 | 52(51) | 71(43) | .155 |
| ypN0 | 70(68.6) | 107(64.8) | .526 |
IFI, involved-field irradiation; ENI, elective nodal irradiation; pCR, pathologic complete response.
† American Joint Committee on Cancer staging manual, eighth edition.