Table 1.
Clinicopathological characteristics of 125 Triple‐negative breast cancer patients
| Characteristic | n (%) |
|---|---|
| Age at diagnosis (years) | |
| >35 | 109 (87.2) |
| ≤35 | 16 (12.8) |
| Histology of primary tumor | |
| Ductal | 113 (90.4) |
| Lobular | 3 (2.4) |
| Others | 7 (5.6) |
| Unknown | 2 (1.6) |
| Primary tumor size | |
| T1 | 45 (36.0) |
| T2 | 51 (40.8) |
| T3 | 10 (8.0) |
| T4 | 8 (6.4) |
| Unknown | 11 (8.8) |
| Axillary node involvement | |
| N0 | 58 (46.4) |
| N1 | 23 (18.4) |
| N2 | 21 (16.8) |
| N3 | 20 (16.0) |
| Unknown | 3 (2.4) |
| TNM Stage | |
| I | 25 (20.0) |
| II | 49 (39.2) |
| III | 37 (29.6) |
| IV | 7 (5.6) |
| Unknown | 7 (5.6) |
| Family historya | |
| Yes | 11 (8.8) |
| No | 114 (91.2) |
| Sites of metastases at recurrence | |
| Lung | 49 (39.2) |
| Bone | 34 (27.2) |
| Liver | 18 (14.4) |
| Brain | 11 (8.8) |
a
Family history was defined as ≥1 first‐ or second‐degree relative with breast cancer at age ≤50 years or ≥1 close blood relative with epithelial ovarian cancer at any age.