Table 2 Tumour characteristics
Parameter | Study group |
|---|---|
(n = 208) | |
Primary tumour location – n (%) | |
- left superior lateral | 61 (29.3%) |
- left superior medial | 25 (12.0%) |
- left inferior lateral | 9 (4.3%) |
- left inferior medial | 8 (3.8%) |
- right superior lateral | 63 (30.3%) |
- right superior medial | 12 (5.8%) |
- right inferior lateral | 7 (3.4%) |
- right inferior medial | 9 (4.3%) |
- unknown | 14 (6.8%) |
Tumor size (cm) | 1.6 (0.1 – 4.5) |
Nodal involvement | |
- pN0 | 148 (71.2%) |
- pN1mic | 35 (16.8%) |
- pN1a | 6 (2.9%) |
- pN2a | 1 (0.5%) |
- pN3a | 1 (0.5%) |
- unknown | 17 (8.2%) |
Metastasis | |
- M0 | 193 (92.8%) |
- M1 | 6 (2.9%) |
- unknown | 9 (4.3%) |
Histology – n (%) | |
- Ductal-invasive | 120 (57.7%) |
- Lobular-invasive | 41 (19.7%) |
- Tubulo/lobular-invasive | 16 (7.7%) |
- Other | 31 (14.9%) |
Grading - n (%) | |
- 1 | 33 (15.9%) |
- 2 | 132 (63.5%) |
- 3 | 36 (17.3%) |
- unknown | 7 (3.3%) |
Lymphangioinvasion | |
- L0 | 22 (10.6%) |
- L1 | 132 (63.5%) |
- unknown | 54 (26.0%) |
Hormone receptors (ER; PR) | |
- positive | 182 (87.5%) |
- negative | 26 (12.5%) |
HER-2/neu | |
- positive | 21 (10.1%) |
- negative | 181 (87.0%) |
- unknown | 6 (2.9%) |
EIC | |
- no | 197 (94.7%) |
- yes | 11 (5.3%) |