Research Article
Nuclear Expression of Snail Is an Independent Negative Prognostic Factor in Human Breast Cancer
Table 1
Basic demographic data for 1043 evaluable breast cancer cases.
| | Number () | Percent (%) |
| Tumor stage | | | pT1 | 307 | 29.4 | pT2 | 544 | 52.2 | pT3 | 71 | 6.8 | pT4 | 121 | 11.6 | Lymph node involvement | | | pN0 | 555 | 53.4 | pN1 | 398 | 38.3 | pN2 | 87 | 8.3 | Tumor grade | | | 1 | 254 | 24.4 | 2 | 439 | 42.1 | 3 | 350 | 33.5 | Histologic subtype | | | Invasive ductal | 735 | 70.5 | Invasive lobular | 152 | 14.6 | Mucinous | 30 | 2.9 | Apocrine | 11 | 1.1 | Cribriform | 33 | 3.2 | Papillary | 15 | 1.4 | Medullary | 31 | 3.0 | Other | 35 | 3.3 | Intrinsic subtype | | | Luminal A (ER+ and/or PR+, HER2−, Ki-67 < 14%) | 176 | 16.9 | Luminal B (HER2−) ER+ and/or PR+, HER2−, Ki-67 ≥ 14%) | 507 | 48.7 | Luminal B (HER2+) (ER+ and/or PR+, HER2+) | 120 | 11.4 | HER2 type (ER− or PR−, HER2+) | 79 | 7.6 | Basal-like (ER−, PR−, HER2−) | 160 | 15.4 |
| Mean tumor size (mm) ± standard deviation (SD) | | Mean age at diagnosis (years) ± standard deviation (SD) | |
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