Table 1. Clinicopathologic characteristics of 493 primary luminal/HER-negative breast cancers.
| Characteristic | Number of cases (%) |
|---|---|
| Age (yrs.) | |
| Median | 50 |
| Range | 26–86 |
| Sex | |
| Female | 491 (99.6) |
| Male | 2 (0.4) |
| Histologic subtype | |
| No special type | 409 (83.0) |
| Lobular | 32 (6.5) |
| Mucinous | 26 (5.3) |
| Tubular | 7 (1.4) |
| Cribriform | 3 (0.6) |
| Others | 16 (3.2) |
| Histologic grade | |
| I | 171 (34.7) |
| II | 217 (44.0) |
| III | 105 (21.3) |
| pT stage | |
| pT1 | 315 (63.9) |
| pT2 | 168 (34.1) |
| pT3 | 7 (1.4) |
| pT4 | 3 (0.6) |
| pN stage | |
| pN0 | 297 (60.2) |
| pN1 | 146 (29.6) |
| pN2 | 30 (6.1) |
| pN3 | 16 (3.2) |
| Unknown | 4 (0.8) |
| Tumor multiplicity | |
| Multiple | 112 (22.7%) |
| Solitary | 381 (77.3%) |
| Lymphovascular invasion | |
| Present | 180 (36.5%) |
| Absent | 313 (63.5%) |
| P53 expression | |
| Negative | 444 (90.1%) |
| Positive | 49 (9.9%) |
| Adjuvant hormonal therapy* | |
| Not done | 2 (0.4%) |
| Done | 485 (99.6%) |
| Adjuvant chemotherapy* | |
| Not done | 167 (34.3%) |
| Done | 320 (65.7%) |
| Adjuvant radiotherapy* | |
| Not done | 161 (33.1%) |
| Done | 326 (66.9%) |
*Therapeutic information was not available for 6 patients due to loss of follow-up.