Table 2.
Occurrence of tumor subtypes, grading, and clinical tumor stage cN presented with frequencies and percentages
| Tumor subtype | Frequency (n) Total n = 2478 |
Percentage (%) 100% |
|---|---|---|
|
Luminal A (ER ± PR ± , Her2 −, Ki67 < 15) |
1106 | 44.6 |
|
Luminal B (ER ± PR ± , Her2 −, Ki67 ≥ 15) |
1115 | 45.0 |
|
HER2 positive (ER ± PR ± , and Her2 3 + or Her2 2 + and ISH +) |
77 | 3.1 |
|
Triple negative (ER−, PR −, Her2 −) |
180 | 7.3 |
| Grading | ||
| G1 | 289 | 11.7 |
| G2 | 1666 | 67.2 |
| G3 | 514 | 20.7 |
| Missing | 9 | 0.4 |
| Tumor histology | ||
| NST (no special type) | 1870 | 75.5 |
| Invasive lobular | 462 | 18.6 |
| Other | 146 | 5.9 |
| Clinical stage N | ||
| cN0 | 1936 | 78.1 |
| cN1 | 403 | 16.3 |
| cN2 | 102 | 4.1 |
| cN3 | 37 | 1.5 |