Patient and primary tumour characteristics
| Characteristic | Number |
|---|---|
| SLN, sentinel lymph node. | |
| Median age in years (range) | 53 (32–83) |
| Median tumour size in mm (range) | 26 (11–80) |
| T1 | 16 (30%) |
| T2 | 33 (61%) |
| T3 | 5 (9%) |
| Median number SLNs harvested (range) | 2 (1–4) |
| Median number non-SLNs harvested (range) | 23 (12–48) |
| Invasive ductal carcinoma | 40 (74%) |
| Invasive lobular carcinoma | 8 (15%) |
| Mixed carcinoma | 6 (11%) |
| Grade 1 | 6 (11%) |
| Grade 2 | 30 (56%) |
| Grade 3 | 18 (33%) |