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% |