| Characteristic of the initial tumor | Population | Frequency (%) |
| Histological type | ||
| - Invasive ductal | 122 | 68.5 |
| - Invasive lobular | 56 | 31.4 |
| - Total | 178 | 100 |
| Clinical stage | ||
| - I | 25 | 14 |
| - II | 68 | 38.2 |
| - III | 85 | 47.8 |
| - Total | 178 | 100 |
| Grade SBR | ||
| - I | 31 | 17.4 |
| - II | 63 | 35.4 |
| - III | 84 | 47.2 |
| - Total | 178 | 100 |
| Ki 67 | ||
| - Low | 8 | 13.8 |
| - Middle | 23 | 39.7 |
| - High | 27 | 46.5 |
| - Total | 58 | 100 |
| Hormonal status | ||
| - Positive | 12 | 20.7 |
| - Negative | 46 | 79.3 |
| - Total | 58 | 100 |
| HER2 | ||
| - Positive | 21 | 42 |
| - Negative | 37 | 58 |
| - Total | 58 | 100 |