Table 1 Factors associated with ARM node metastases
Characteristic | ARM positive (n = 9) | ARM negative (n = 21) | P value | ||
|---|---|---|---|---|---|
n | % | n | % | ||
Age, years | 1.000 | ||||
≥ 50 | 6 | 66.7 | 14 | 66.7 | |
< 50 | 3 | 33.3 | 7 | 33.3 | |
cT stage | 0.188 | ||||
T1 | 1 | 11.1 | 8 | 38.1 | |
T2 | 7 | 77.8 | 12 | 57.1 | |
T3 | 0 | 0.0 | 1 | 4.8 | |
T4 | 1 | 11.1 | 0 | 0 | |
cN stage | 0.093 | ||||
N0 | 2 | 22.2 | 1 | 4.8 | |
N1 | 3 | 33.3 | 15 | 71.4 | |
N2 | 2 | 22.2 | 4 | 19.0 | |
N3 | 2 | 22.2 | 1 | 4.8 | |
Histological type | 0.128 | ||||
Ductal | 6 | 66.7 | 8 | 38.1 | |
Lobular | 1 | 11.1 | 0 | 0 | |
Mixed | 2 | 22.2 | 11 | 52.4 | |
Unknown | 0 | 0 | 2 | 9.5 | |
ER status | 0.300 | ||||
Positive | 8 | 88.9 | 21 | 100 | |
Negative | 1 | 11.1 | 0 | 0 | |
PR status | 0.418 | ||||
Positive | 4 | 44.4 | 14 | 66.7 | |
Negative | 5 | 55.6 | 7 | 33.3 | |
HER2 status | 0.666 | ||||
Positive | 3 | 33.3 | 5 | 23.8 | |
Negative | 6 | 66.7 | 16 | 76.2 | |
Ki-67 status | 0.229 | ||||
Positive | 7 | 77.8 | 10 | 47.6 | |
Negative | 2 | 22.2 | 11 | 52.4 | |
Neoadjuvant therapy | 1.000 | ||||
No | 6 | 66.7 | 15 | 71.4 | |
Yes | 3 | 33.3 | 6 | 28.6 | |
Axillary surgery | 0.204 | ||||
SLNB+ALND | 1 | 11.1 | 9 | 42.6 | |
ALND | 8 | 88.9 | 12 | 57.4 | |