Table 1.
The clinicopathological characteristics of breast cancer patients
| Characteristics | No. | % |
|---|---|---|
| Age (y) | ||
| <50 | 17 | 34 |
| ≥50 | 33 | 66 |
| Tumor size (cm) | ||
| <3 | 18 | 36 |
| ≥3 | 32 | 64 |
| Primary tumor (T stage) (cm) | ||
| T1: ≤2.0 | 15 | 30 |
| T2: >2‐≤5 | 24 | 48 |
| T3: >5 | 11 | 22 |
| Regional lymph nodes (N stage) | ||
| NX | 5 | 10 |
| N0 | 13 | 26 |
| N1 | 11 | 22 |
| N2 | 16 | 32 |
| N3 | 5 | 10 |
| Distant metastasis (M stage) | ||
| MX | 5 | 10 |
| M0 | 17 | 34 |
| M1 | 28 | 56 |
| Lymph node metastasis | ||
| Negative | 17 | 34 |
| Positive | 33 | 66 |
| Tumor stage | ||
| I + II | 27 | 54 |
| III | 23 | 46 |
| Estrogen receptor status | ||
| Negative | 15 | 30 |
| Positive | 31 | 62 |
| Unknown | 4 | 8 |
| Progesterone receptor status | ||
| Negative | 18 | 36 |
| Positive | 29 | 58 |
| Unknown | 3 | 6 |
| HER‐2 status | ||
| Negative | 22 | 44 |
| Positive | 27 | 54 |
| Unknown | 1 | 2 |