| Laboratory findings | No | % | |
| Estrogens/progestin receptors | Negative | 10 | 26.3% |
| Positive | 28 | 73.7% | |
| Human epidermal growth factor receptor 2 (HER2) | Negative | 25 | 69.4% |
| Positive | 11 | 30.6% | |
| Antigen Ki-67 | Less than 12% | 3 | 23.1% |
| More than 12% | 10 | 76.9% | |