Characteristic

Breast cancer (124)

Number (%)

Controls (150)

Age (years)

Median

range

48

37 - 74

46

36 - 74

Tumor size cm

(Mean± SD)

4.6 ± 3.4

Histological grade

I

II

III

11 (8.9)

62 (50.0)

51 (41.1)

Clinical stage

I

II

III

11 (8.9)

53 (42.7)

60 (48.4)

Estrogen receptor

negative

positive

36 (29.0)

88 (71.0)

Progesterone receptor

negative

positive

42 (33.9)

82 (66.1)

Lymph node invasion

negative

positive

54 (43.5)

70 (56.5)

Vascular invasion

negative

positive

53 (42.7)

71 (57.3)