Table 1.
Clinical characteristics of the study cohort
| Participant Characteristics | Total (n = 204) | ||
|---|---|---|---|
|
| |||
| Median | Range | ||
|
|
|||
| Age (years) | 49 | 25–85 | |
|
| |||
| n | % | ||
|
| |||
| Histology | Ductal | 203 | 99 |
|
| |||
| Tumor subtype | HR+/HER2- | 30 | 15 |
| Triple negative | 55 | 27 | |
| HER2+ | 119 | 58 | |
|
| |||
| cT | T0*/1 | 24 | 12 |
| T2/3 | 142 | 70 | |
| T4 | 38 | 18 | |
|
| |||
| cN | N1 | 170 | 83 |
| N2 | 27 | 13 | |
| N3 | 7 | 3 | |
|
| |||
| Axillary surgery | ALND† | 135 | 66 |
| SNB | 69 | 34 | |
*
3 patients presented with an occult primary breast cancer and were classified as cT0
†
5 ALND patients had attempted SNB; 1 failed to map and 4 had <3 SNs retrieved
HR, hormone receptor; cT, clinical tumor stage; cN, clinical nodal stage; ALND, axillary lymph node dissection; SNB, sentinel node biopsy