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Baseline Tumor Characteristics
| Characteristic | N | Percentage |
|---|---|---|
| Tumor diameter | ||
| Mean | 8.9 | |
| SD | 2.4 | |
| Median | 9.0 | |
| Range | 4–15 | |
| Histology | ||
| Invasive ductal carcinoma | 14 | 87 |
| Comedocarcinoma | 1 | 6.3 |
| Mucinous adenocarcinoma | 1 | 6.3 |
| Mitotic index grade | ||
| Grade 1 | 2 | 12.5 |
| Grade 2 | 8 | 50 |
| Grade 3 | 6 | 37.5 |
| Hormone receptor status | ||
| ER+/PR+ | 1 | 6.3 |
| ER+/PR− | 2 | 12.5 |
| ER−/PR+ | 1 | 6.3 |
| ER−/PR− | 12 | 75 |
| HER2+ | 0 | 0 |
| HER2− | 16 | 100 |
