Breast Cancer Screening in the Czech Republic: Transformation of System of Uncontrolled Prevention into Regular Service Screening

National-wide screening program in the Czech Republic has started in September 2002. Czech National Mammography Screening Database contains detailed data of 467,696 women. A total of 2,147 breast cancers were detected, the cancer detection rate was 46 cases per 10,000 women. The distribution of tumor sizes detected in screening was: Tis 7%, T1 71%, T2 20%, T3 1% and T4 1%. Before screening was implemented, percentage of breast cancers ≤2cm was 39% in comparison to 78% of tumors ≤2cm detected in screening. Sophisticated system of screening data management and validation is important from the quality control persp…