Table 2. Clinicopathological Characteristics of Triple Negative Breast Cancers (n = 105).
| Numbers | Percentage (%) | ||
| Age (years) | |||
| Median/Range | 49/28–76 | ||
| Tumor size | |||
| Median/Range | 22 mm/5–100 mm | ||
| <20 mm/≥20 mm | 41/64 | 39.0/61.0 | |
| Histolopathological features | |||
| Invasive ductal carcinoma | 88 | 83.8 | |
| Medullary carcinoma | 5 | 4.8 | |
| Invasive lobular carcinoma | 2 | 1.9 | |
| Metaplastic carcinoma | 2 | 1.9 | |
| Specialized typesa | 8 | 7.6 | |
| T stage | |||
| 1/2/3/4/ | 43/57/2/3/ | 41/54.3/1.9/2.9 | |
| N stage | |||
| 01/2/3 | 65/28/7/5 | 61.9/26.7/6.7/4.7 | |
| Nuclear gradeb | |||
| 1/2/3 | 2/28/70 | 1.9/26.7/66.7 | |
| Histologic gradec | |||
| I/II/III | 7/25/68 | 6.7/23.8/64.8 | |
| Ki67 labeling index | |||
| <5% | 17 | 16.2 | |
| 5% ∼49% | 67 | 63.8 | |
| ≥50% | 21 | 20 | |
| TP53 gene mutations | |||
| Missense DBM | 11 | 10.5 | |
| Missense non-DBM | 5 | 4.8 | |
| Frameshift | 8 | 7.6 | |
| Nonsense | 7 | 6.7 | |
| Splicing | 2 | 1.9 | |
a
Adenoid cystic carcinoma, ductal carcinoma in situ, invasive cribriform carcinoma, invasive micropapillary carcinoma, invasive tubular carcinoma, neuroendocrine carcinoma and mucinous carcinoma. b,c Five samples did not have a defined histologic grade and nuclear grade.