Table 1.

Patient characteristics: receptorial asset (ER, PR, HER2), and Ki67 status.

Characteristic	No.	%
Age at surgery (years)
<50	4	18
>50 <70	12	55
>70	6	27
Ki67 status
high (>15%)	15	68
low (<15%)	3	14
n.e.	4	16
ER status
ER+	21	95
ER−	1	5
PR status
PR+	10	45
PR−	12	55
HER2 status
HER2+ (>3+)	3	14
HER2−	17	77
n.e.	2	9

ER, oestrogen receptor; PR, progesterone receptor; HER2, human epidermal growth factor receptor 2; n.e., not evaluable.