Table 1. Clinicopathological characteristics of the study groups.
| Characteristics | Triple-negative n (%) | Hereditary non-triple-negative n (%) |
|---|---|---|
| Age at diagnosis (years) | ||
| Range | 23–85 | 31–80 |
| Mean | 55.5 | 57.5 |
| Mean number of breast cancers in families | 1.37 | 3.00 |
| Mean number of ovarian cancers in families | 0.11 | 0.21 |
| Tumor grade | ||
| G1 | 0 | 8 (18.2) |
| G2 | 17 (10.8) | 24 (54.5) |
| G3 | 141 (89.2) | 12 (27.3) |
| Lymph node status | ||
| N0 | 112 (70.9) | 25 (56.8) |
| N1 | 46 (29.1) | 19 (43.2) |
| Tumor size | ||
| ≤ 2 cm | 80 (51.3) | 31 (70.5) |
| > 2 cm | 76 (48.7) | 13 (29.5) |
| Histopathological type | ||
| Ductal | 97 (61.3) | 32 (72.8) |
| Medullary | 14 (8.9) | 0 |
| Atypical medullary | 27 (17.1) | 0 |
| Metaplastic | 6 (3.8) | 0 |
| Lobular | 3 (1.9) | 6 (13.6) |
| Other | 11 (7.0) | 6 (13.6) |
| ER | ||
| Negative | 158 (100) | 5 (11.4) |
| Positive | 0 | 39 (88.6) |
| PR | ||
| Negative | 158 (100) | 6 (13.6) |
| Positive | 0 | 38 (86.4) |
| HER-2 | ||
| Negative | 158 (100) | 6 (13.6) |
| Positive | 0 | 38 (86.4) |