Table 1 Characteristics of DCIS molecular subgroups, by immunohistochemistry in 392 women with a primary DCIS
Characteristics | Basal-like (n = 32, 8.2%) | Non basal-like (n = 360, 91.8%) | P |
|---|---|---|---|
Age at entry, mean ± SD (n = 392) | 56.7 ± 12.6 | 57.8 ± 11.5 | 0.6 |
Tumor size, number (%) (n = 352) | 0.84 | ||
≤ 15 m | 16 (59.3) | 175 (53.9) | |
> 15 mm | 8 (29.6) | 104 (32.0) | |
Multifocal | 3 (11.1) | 46 (14.2) | |
Tumor grade*, number (%) (n = 388) | 0.11 | ||
I | 1 (3.1) | 29 (8.2) | |
II | 11 (34.4) | 171 (48.0) | |
III | 20 (62.5) | 156 (43.8) | |
Detection mode, number (%) (n = 391) | 0.3 | ||
Screening | 22 (68.8) | 276 (76.9) | |
Clinically | 10 (31.3) | 83 (23.1) | |
Type of surgery, number (%) (n = 392) | 0.61 | ||
Breast Conserving Surgery | 26 (81.3) | 272 (75.6) | |
Mastectomy | 6 (18.8) | 88 (24.4) | |
Postoperative radiotherapy, number (%)(n = 392) | 0.72 | ||
Yes | 10 (31.3) | 130 (36.1) | |
No | 22 (68.8) | 230 (63.9) |