| Total | BLBC | NBBC | p value |
---|---|---|---|---|
Age | (n=468) | (n=45) | (n=423) | Â |
 | Mean:53±12 (range: 19–86) years | Mean:49.3±12.9 (range: 19–78) years | Mean:53.3±12.7 (range: 27–86) years | p=0.04 |
Tumor size | (n=500) | (n=47) | (n=453) | Â |
 | Mean: 2.7±1.6 cm (0.4-20) | Mean: 2.8±1.4 cm (1–8) | Mean: 2.7±1.6 cm (0.4-20) | p=0.47 |
 | Median: 2.5 cm | Median: 2.5 cm | Median: 2.4 cm |  |
<2 cm | 203 (40.6%) | 12 (26.5%) | 191 (42.2%) | p=0.07 |
2-5 cm | 275 (55%) | 33 (70.2%) | 242 (53.4%) | Â |
<5 cm | 22 (4.4%) | 2 (4.3%) | 20 (4.4%) | Â |
Histological grade | (n=500) | (n=47) | (n=453) | p<0.0001 |
1 | 143 (28.6%) | 0 (0%) | 143 (31.6%) | Â |
2 | 175 (35%) | 0 (0%) | 175 (38.6%) | Â |
3 | 182 (36.4%) | 47 (100%) | 135 (29.8%) | Â |
Axillary lymph node metastasis | (n=489) | (n=44) | (n=445) | Â |
 | Mean: 5 (0–46) | Mean: 6 (0–27) | Mean: 5 (0–46) | p=0.51 |
0 | 214 (43.8%) | 20 (45.5%) | 194 (43.6%) | p=0.39 |
1-3 | 161 (32.9%) | 16 (36.4%) | 145 (32.6%) | Â |
4-9 | 74 (15.1%) | 3 (6.8%) | 71 (16%) | Â |
≥10 | 40 (8.2%) | 5 (11.4%) | 35 (7.8%) |  |
Nipple invasion | (n=456) | (n=37) | (n=419) | p=0.53 |
Absent | 34 (7.5%) | 34 (91.9%) | 388 (92.6%) | Â |
Present | 422 (92.5%) | 3 (8.1%) | 31 (7.4%) | Â |
Breast skin invasion | (n=500) | (n=47) | (n=453) | p=0.16 |
Absent | 15 (3%) | 44 (93.6%) | 441 (97.4%) | Â |
Present | 485 (97%) | 3 (6.4%) | 12 (2.6%) | Â |
Fascia invasion | (n=469) | (n=43) | (n=426) | p=0.77 |
Absent | 39 (8.3%) | 39 (90.7%) | 391 (91.8%) | Â |
Present | 430 (91.7%) | 4 (9.3%) | 35 (8.2%) | Â |