Table 1

Invasive and in situ breast cancer cases diagnosed in women 40 years old and above in the nine oldest SEER cancer registry areas of the U.S. (1975 to 2003)

Invasive

In situ

Age (years)

Number

Percentage

Number

Percentage

40–44

28,893

7.3

5,902

9.9

45–49

39,696

10.1

8,719

14.6

50–54

43,107

10.9

8,885

14.8

55–59

45,470

11.5

7,690

12.9

60–64

48,011

12.2

6,878

11.5

65–69

49,652

12.6

7,003

11.7

70–74

47,139

11.9

6,207

10.4

75–79

40,886

10.4

4,689

7.8

80–84

28,378

7.2

2,559

4.3

85+

23,659

6.0

1,305

2.2

Total (≥40)

394,891

100.0

59,837

100.0

SEER, Surveillance, Epidemiology, and End Results.

Jemal et al. Breast Cancer Research 2007 9:R28   doi:10.1186/bcr1672