Table 3. Clinical characteristics of subjects with neo-adjuvant chemotherapy (N = 19).

Age (year)	47.0 (45.0, 53.0)
Left breast cancer	7 (36.8%)
Right breast cancer	12 (63.2%)
Max diameter of cancer (cm)	2.5 (2.0, 4.0)
Infiltrating lobular carcinoma	2 (10.5%)
Infiltrating ductal carcinoma	17 (89.5%)
Axillary lymph node metastasis	5 (26.3%)
ER+	11 (57.9%)
PR+	13 (68.4%)
HER-2+	7 (36.8%)
Ki67	20.0% (10.0%, 60.0%)
Luminal A	4 (21.1%)
Luminal B	4 (21.1%)
HER-2 overexpression	7 (36.7%)
ER-, PR- and HER-2-	4 (21.1%)

Abbreviations: Continuous variables are presented as median (with interquartile range); categorical variables are presented as number (percentage). ER+, estrogen receptor positive; PR+, progesterone receptor positive; HER-2+, human epidermal growth factor receptor-2 positive; Ki67, Ki67 nuclear antigen.