[Mammographic screening in the municipality of Copenhagen. Results of the first screening round].
The aim of the study was to evaluate the results from the prevalence round of the mammography screening programme in the Municipality of Copenhagen. All women who by 1 April 1991 were 50-69 years old, and who lived in the Municipality of Copenhagen, were during the period 1 April 1991-24 April 1993 offered a mammography. Those with suspect findings were recalled for further examination and possible biopsy. Women with breast cancer were offered treatment according to the standard national protocols (DBCCG). The participation rate was 71% (30,416/43,087). Among these 2043 (6.7%) were re-examined and 592 (1.9%) underwent surgical biopsy. Breast cancer was revealed in 359 (1.2%) women, of whom 88% had an invasive breast cancer. Prevalence of breast cancer increased significantly with increasing age. The positive predictive value for breast cancer among those re-examined was 18% and for those who had a surgical biopsy 61%. Among women with an invasive breast cancer 41% had a tumour of 10 mm or less, 80% had negative lymph node status and 56% had breast conserving surgery. During the following 12 months 14 women with a normal mammogram at the screening round developed breast cancer giving a sensitivity of 96%. It is concluded that the first mammography screening in Denmark showed the highest breast cancer prevalence published so far. A possible explanation could be a high sensitivity of the screening method, indicated by a relatively high frequency of small cancers. The screening programme was fully comparable with international standards.
Jørgensen
T
T
Kirugisk afdeling K, røntgenafdelingen, patologisk instiut, Bispebjerg Hospital, København.
Jensen
L B
LB
Duun
S
S
Hirsch
F R
FR
Mouridsen
H T
HT
Blichert-Toft
M
M
Rank
F E
FE
Christensen
L H
LH
Hansen
A G
AG
Nissen
F H
FH
D000368:Aged; D001706:Biopsy; D001943:Breast Neoplasms / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000473:pathology; D002278:Carcinoma in Situ / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000473:pathology; D003718:Denmark / Q000453:epidemiology; D005060:Europe / Q000453:epidemiology; D005260:Female; D006801:Humans; D008327:Mammography; D008403:Mass Screening; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D015995:Prevalence
Mammografiscreening i Københavns Kommune. Resultater fra første screeningsrunde.