Table 2.
Intergroup distributions of ages, existence of bone metastasis, type of breast cancer, localization of breast cancer, tumor diameter by category, number of axillary lymph nodes, existence of estrogen and progestrone receptors, and HER2 protein
| Characteristic | N (%) |
|---|---|
| Groups of Age | |
| < 30 | 3 (0.3) |
| 30-39 | 112 (10.2) |
| 40-49 | 312 (28.4) |
| 50-59 | 271 (24.6) |
| > 60 | 402 (36.5) |
| Bone Metastasis | |
| (+) | 174 (15.8) |
| (-) | 926 (84.2) |
| CA Type | |
| Invasive Ductal Carcinoma (IDC) | 926 (84.2) |
| Invasive Lobular (IL) & Ductal Carcinoma (DC) | 90 (8.2) |
| Invasive Lobular Carcinoma (ILC) | 63 (5.7) |
| Phyllodes | 1 (0.1) |
| Tubular Carcinoma | 16 (1.5) |
| Metaplastic Carcinoma | 4 (0.4) |
| CA Localization | |
| Left Upper Outer | 297 (27.0) |
| Left Upper Inner | 93 (8.4) |
| Left Lower Outer | 81 (7.2) |
| Left Lower Inner | 76 (6.9) |
| Right Upper Outer | 269 (24.4) |
| Right Upper Inner | 68 (6.2) |
| Right Lower Outer | 86 (7.8) |
| Right Lower Inner | 55 (5.0) |
| Left Central | 3 (0.3) |
| Left Retroareolar | 34 (3.1) |
| Right Retroareolar | 38 (3.5) |
| Tumor Diameter | |
| < 1 cm | 101 (9.2) |
| 1-1.99 cm | 357 (32.4) |
| 2-2.99 cm | 322 (29.3) |
| > 3 cm | 320 (29.1) |
| Num. of Axillary Lymph Nodes | |
| 0 | 576 (52.4) |
| 1-3 | 306 (27.8) |
| ≥ 4 | 218 (19.8) |
| Estrogen Receptor (ER) | |
| Positive | 906 (82.4) |
| Negative | 194 (17.6) |
| Progesterone Receptor (PgR) | |
| Positive | 811 (73.7) |
| Negative | 289 (26.3) |
| HER2 | |
| Positive | 170 (15.5) |
| Negative | 826 (75.1) |
| Indefinite Positive | 104 (9.5) |
| HER2 Score | |
| (-) | 662 (60.2) |
| (+) | 165 (15.0) |
| (++) | 119 (10.8) |
| (+++) | 154 (14.0) |
N: Number; CA: Cancer; HER2: Human Epidermal Growth Factor Receptor 2.