Number (n)

Rate (%)

1) Tumor’s size:

・ pT1a/b

・ pT1c

・ pT2

10

21

17

20.8

43.7

35.4

2) Histological type:

・ Ductal carcinoma

・ Lobular carcinoma

35

13

72.9

27.1

3) Lymph node dissection:

・ N0

・ N1

28

20

58.3

42.7

4) Number of foci:

・ One

・ Two

・ Multifocal micro calcifications

40

7

1

83.3

14.6

2.1