UPDATED 15.10.2013 14:01


Organised breast cancer screening programme in the Pohjois-Pohjanmaa health care district in Finland in the invitation year 1991. Numbers and percentage distribution of screened women, referrals to further examinations and to surgery, and histologically confirmed diagnoses by age groups.

Age group1 Screened Referral Additional
mammogram
Ultra-
sonography
Fine-needle
biopsy
Surgery Histological diagnosis
      Benign      Malignant    Unknown
  n n % n % n % n % n % n % n % n %
50-542 1077 33 3.06 33 3.06 31 2.88 5 0.46 8 0.74 4 0.37 3 0.28 1 0.09
55-592 495 5 1.01 4 0.81 3 0.61 - - 1 0.20 - - 1 0.20 - -
60-64 1033 17 1.65 17 1.65 14 1.36 1 0.10 4 0.39 1 0.10 3 0.29 - -
65-69 - - - - - - - - - - - - - - - - -
Total 2605 55 2.11 54 2.07 48 1.84 6 0.23 13 0.50 5 0.19 7 0.27 1 0.04

1 Age groups are defined on the basis of the invitation and the birth year.
2 Age groups targeted in the Decree of Public Health (1992).