Variable

Number

%

Age (years)

<50

≥50

Median

Range

35

28

47

25 - 69

55.6

44.4

Menopausal status

Premenopausal

Postmenopausal

48

15

76.2

23.8

Laterality

Left

Right

34

29

54.0

46.0

Site

Upper outer

Upper inner

Lower outer

Lower inner

Central

32

9

12

8

2

50.8

14.3

19.0

12.7

3.2

T Stage

pT1

pT2

17

46

27.0

73.0

Nodal stage

pN1

pN2

pN3

34

25

4

54.0

39.7

6.4

Histology

Ductal

Lobular

58

5

92.1

7.9

Grade

Well

Moderate

Poor

12

50

1

19

79.4

1.6

ECE

No

Yes

54

9

85.7

14.3

LVI

No

Yes

50

13

79.4

20.6

Hormone receptor

Positive

Negative

Unknown

34

20

9

54.0

31.7

14.0

HER2 status

Negative

Positive

Unknown

43

11

9

68.3

17.5

14.3

Hormonal therapy

Tamoxifen

Aromatase Inhibitors

No

10

33

20

15.9

52.4

31.7