Table 1.
Description of the characteristics in the population study
| Characteristics | % |
|---|---|
| Median age | 45 years |
| Median histological tumor diameter | 4.3 cm |
| Triple-negative breast cancer | 17.5% |
| Basal-like | 12.6% |
| Unclassified subtype | 4.9% |
| Histological type | |
| Invasive ductal carcinomas | 78% |
| Metaplasic carcinoma | 9.4% |
| Medullar carcinoma | 6.3% |
| Other types | 6.3% |
| Histological grade SBR | |
| I | 3.3% |
| II | 47.5% |
| III | 49.2% |
| Vascular invasion | 26.6% |
| Positive lymph nodes | 51% |
| Distant metastases | 22.4% |
| AJCC staging | |
| stage I | 17.2% |
| stage IIA | 20.7% |
| stage IIB | 13.8% |
| stage IIIA | 10.3% |
| stage IIIB | 15.5% |
| metastatic | 22.4% |
| Treatment modalities | |
| Surgery | 94% |
| Radical mastectomy | 40% |
| Conservative surgery | 60% |
| Chemotherapy | |
| Neoadjuvant chemotherapy | 18% |
| Adjuvant chemotherapy | 82%. |
| Anthracycline based regimen | 98% |
| Only taxanes | 30% |
| Complete pathologic response | 26% |
| Outcome | |
| Overall survival at 3 years | 49% |
| Disease-free survival at 3 years | 39% |