Table 2. Patient characteristics.
| N | %* | |
|---|---|---|
| Histology | ||
| Ductal | 18 | 81.8 |
| Lobular | 1 | 4.5 |
| Mucinous | 1 | 4.5 |
| Medullary | 1 | 4.5 |
| Unknown | 1 | 4.5 |
| Stage | ||
| 1A | 3 | 13.6 |
| 2A | 6 | 27.2 |
| 2B | 4 | 18.1 |
| 3A | 1 | 4.5 |
| 3C | 3 | 13.6 |
| 4 | 4 | 18.1 |
| Unknown | 1 | 4.5 |
| Grade | ||
| 1 | 1 | 4.5 |
| 2 | 6 | 27.2 |
| 3 | 13 | 59 |
| Unknown | 2 | 9 |
| ER | ||
| Positive | 11 | 50 |
| Negative | 11 | 50 |
| PR | ||
| Positive | 6 | 27.2 |
| Negative | 16 | 72.7 |
| HER2 | ||
| Positive | 9 | 40.9 |
| Negative | 11 | 50 |
| Unknown | 2 | 9 |
| Radiation therapy | ||
| Yes | 14 | 63.6 |
| No | 8 | 36.3 |
| Radiation type | ||
| Gamma knife | 4 | 28.5 |
| Whole brain | 3 | 21.4 |
| Gamma knife and whole brain | 7 | 50 |
| Vital status | ||
| Alive | 4 | 18.1 |
| Dead | 18 | 81.8 |
*
Three patients had missing clinical data and were not included in the analysis of patient characteristics.