Table 1.

Baseline characteristics of patients who received preoperative MWA.

Variables	MWA (n = 22)
Mean age (y)	53.7 ± 11.0
≤50	10 (45.5%)
>50	12 (54.5%)
Mean tumor size in US	20.9 ± 6.2
≤2 cm	11 (50.0%)
>2 cm	11 (50.0%)
Clinical node status
Negative	18 (81.8%)
Positive	4 (18.2%)
Tumor location
Lateral-superior	12 (54.5%)
Interior-superior	7 (31.8%)
Lateral-inferior	3 (13.6%)
Molecular subtype
HR positive and HER2 negative	10 (45.5%)
HER2 positive	5 (22.7%)
Triple negative	7 (31.8%)

HR, hormone receptor; MWA, microwave ablation; US, ultrasound.