Table 1 Patient characteristics

Age

90

Median, range

57 years, 29–81 years

Tumor grade (BNG)

89

1

3

2

47

3

39

Tumor size

90

T1

19

T2

36

T3

18

T4

17

Stage

90

I

15

II

37

III

38

Lymph-node metastasis

90

pN0

39

pN1

28

pN2

9

pN3

14

Lymphatic invasion

78

Positive

33

Negative

45

Vascular invasion

78

Positive

32

Negative

46

ER status

87

Positive

52

Negative

35

PR status

87

Positive

40

Negative

47

Hormone receptor status

87

Positive (ER- and/or PR-positive)

55

Negative (both ER- and PR-negative)

32

HER-2/neu status

80

Positive

7

Negative

73

Histology

90

Ductal

62

Lobular

8

Mixed ductal and lobular

9

Other

11