Table 1 Patient and tumor characteristics
Characteristics | N | % |
|---|---|---|
Age | ||
 52 (33–74) |  |  |
 ≥ 50 | 112 | 56.5 |
 < 50 | 86 | 43.4 |
T | ||
 T1 | 138 | 69 |
 T2 | 61 | 30.5 |
 T3 | 1 | 0.5 |
Histological type | ||
 In situ | 23 | 11.5 |
 Microinvasive | 12 | 6 |
 Invasive ductal | 134 | 77 |
 Invasive lobular | 15 | 7.5 |
 Other | 16 | 8 |
Tumor grade | ||
 I | 22 | 11 |
 II | 112 | 56 |
 III | 28 | 14 |
 NA | 38 | 19 |
Molecular subtype (immunohistochemical) | ||
 Luminal A | 65 | 32.5 |
 Luminal B | 78 | 39 |
 Her-2 positive | 9 | 4.5 |
 Triple negative | 44 | 22 |
 NA | 4 | 2 |
Laterality | ||
 Left | 105 | 52.5 |
 Right | 95 | 47.5 |
Quadrant | ||
 Upper outer | 94 | 47 |
 Lower outer | 26 | 13 |
 Upper inner | 55 | 27.5 |
 Lower inner | 17 | 8.5 |
 Central | 8 | 4 |
Body mass index (BMI) | ||
 < 19 | 10 | 5 |
 19–25 | 120 | 60.6 |
 ≥ 25 | 68 | 34.3 |
 ≥ 30 | 0 | 0 |