Table 1.
Demographic features of study cohort.
| Cases (n=97) |
|||
|---|---|---|---|
| Case #/average | %/range | ||
| Age (years) | 57 | 32–93 | |
| Specimen | Biopsy | 73 | 75.3% |
| Resection | 24 | 24.7% | |
| Histologic type | IDC | 56 | 57.7% |
| ILC | 3 | 3.1% | |
| Mixed IDC/ILC | 2 | 2.1% | |
| Metastatic carcinoma | 36 | 37.1% | |
| Estrogen receptor | Positive | 73 | 75.3% |
| Negative | 24 | 24.7% | |
| Progesterone receptor | Positive | 40 | 41.2% |
| Negative | 57 | 58.8% | |
| HER2 IHC | Negative (0/1+) | 52 | 53.6% |
| Equivocal (2+) | 29 | 29.9% | |
| Positive (3+) | 16 | 16.5% | |
Abbreviations: IDC: invasive ductal carcinoma; ILC: invasive lobular carcinoma, IHC: immunohistochemistry.