Table 1.
Patient and tumor characteristics
| Characteristic | CBS (254) no. (%) | MRM (180) no. (%) | P value |
|---|---|---|---|
| Age | |||
| < 50 | 92 (36.2) | 118 (65.6) | 0.000 |
| ≥ 50 | 162 (63.8) | 62 (34.4) | |
| Menopausal status | |||
| Premenopausal | 96 (37.8) | 118 (65.6) | 0.000 |
| Perimenopausal | 42 (16.5) | 26 (14.4) | |
| Postmenopausal | 116 (45.7) | 36 (20.0) | |
| Pathology | |||
| IDC | 245(96.5) | 173 (96.1) | 0.793 |
| Lobular | 4 (1.5) | 2 (1.1) | |
| Medullary | 5 (2.0) | 5 (2.8) | |
| T stage | |||
| 1 | 42 (23.3) | 77 (29.9) | 0.079 |
| 2 | 138 (76.7) | 177 (70.1) | |
| N stage | |||
| 0 | 138(54.3) | 113 (62.8) | 0.049 |
| 1 | 116 (45.7) | 67 (37.2) | |
| Grade | |||
| 1 | 6 (2.3) | 2 (1.1) | 0.348 |
| 2 | 234 (92.1) | 172 (95.6) | |
| 3 | 14 (5.5) | 6 (3.3) | |
| ER | |||
| Positive | 168 (66.1) | 106 (58.9) | 0.075 |
| Negative | 86 (33.9) | 74 (41.1) | |
| PR | 0.070 | ||
| Positive | 138 (54.3) | 84 (46.7) | |
| Negative | 116 (45.7) | 96 (53.3) | |
| HER2 | |||
| Positive | 51 (20.1) | 42 (10.5) | |
| Negative | 190 (74.8) | 131 (81.9) | |
| Unknown | 13 (5.11) | 7 (28.6) | 0.630 |
| TNBC | 67 (15.4) | 55 (12.7) | |
CBS conservative breast surgery
MRM modified radical mastectomy
IDC infiltrating duct carcinoma
TNBC triple negative breast cancer