Clinicopathologic characteristics of patients who underwent axillary surgery after neoadjuvant chemotherapy for clinically node-positive breast cancer, by pathologic complete response status
| Characteristic | No. (%) of patients* | ||
|---|---|---|---|
| Overall n = 323 | No pathologic complete response† n = 196 | Pathologic complete response† n = 127 | |
| Tumour size, median (range), cm | 4.14 (0.6–11.6) | 4.27 (0.6–11.6) | 3.94 (0.8–10.4) |
| Histologic type | |||
| Ductal | 276 (85.4) | 169 (61.2) | 107 (38.8) |
| Lobular | 16 (5.0) | 14 (87.5) | 2 (12.5) |
| Mixed ductal/lobular | 9 (2.8) | 9 (100.0) | 0 (0.0) |
| Missing | 22 (6.8) | 4 (18.2) | 18 (81.8) |
| Receptor subtype | |||
| ER+/PR+/HER2− | 104 (32.2) | 85 (81.7) | 19 (18.3) |
| ER+/PR−/HER2− | 30 (9.3) | 17 (56.7) | 13 (43.3) |
| HER2+ | 117 (36.2) | 55 (47.0) | 62 (53.0) |
| Triple-negative | 63 (19.5) | 34 (54.0) | 29 (46.0) |
| Missing | 9 (2.8) | 5 (55.6) | 4 (44.4) |
| Tumour grade | |||
| 1–2 | 118 (36.5) | 87 (66.9) | 31 (26.3) |
| 3 | 178 (55.1) | 101 (58.7) | 77 (43.3) |
| Missing | 27 (8.4) | 8 (29.6) | 19 (70.4) |