Table 1 Patient characteristics
| Â | Â | n | (%) | Â | Â | n | (%) |
|---|---|---|---|---|---|---|---|
histology | Â | Â | Â | tumor grade | Â | Â | Â |
| Â | NST | 144 | (49.8) | Â | G1-G2 | 107 | (70.9) |
| Â | non NST | 145 | (50.2) | Â | G3 | 44 | (29.1) |
tumor foci | Â | Â | Â | PR | Â | Â | Â |
| Â | unifocal | 151 | (52.2) | Â | negative | 119 | (41.2) |
|  | ≥ 2 foci | 138 | (47.8) |  | positive | 170 | (58.8) |
pT | Â | Â | Â | HER2 | Â | Â | Â |
| Â | pT1 | 193 | (66.8) | Â | negative | 246 | (87.5) |
| Â | pT2-pT4 | 96 | (33.2) | Â | positive | 35 | (12.5) |
pN | Â | Â | Â | age (years) | Â | Â | Â |
| Â | pN0 | 165 | (57.5) | Â | median | 58.0 | Â |
| Â | pN1-pN3 | 122 | (42.5) | Â | range | 69 | Â |
ER | |||||||
| Â | negative | 55 | (19.0) | Â | Â | Â | Â |
| Â | positive | 234 | (81.0) | Â | Â | Â | Â |