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
 pT130729.4
 pT254452.2
 pT3716.8
 pT412111.6
Lymph node involvement
 pN055553.4
 pN139838.3
 pN2878.3
Tumor grade
 125424.4
 243942.1
 335033.5
Histologic subtype
 Invasive ductal73570.5
 Invasive lobular15214.6
 Mucinous302.9
 Apocrine111.1
 Cribriform333.2
 Papillary151.4
 Medullary313.0
 Other353.3
Intrinsic subtype
 Luminal A
  (ER+ and/or PR+, HER2, Ki-67 < 14%)
17616.9
 Luminal B (HER2) 
 ER+ and/or PR+, HER2, Ki-67 ≥ 14%)
50748.7
 Luminal B (HER2+) 
  (ER+ and/or PR+, HER2+)
12011.4
 HER2 type (ER or PR, HER2+)797.6
 Basal-like (ER, PR, HER2)16015.4

Mean tumor size (mm) ± standard deviation (SD)
Mean age at diagnosis (years) ± standard deviation (SD)