3161 mammography screening examinations were performed between 2004 and 2005. Women with detected breast cancer, mainly at the age 56-60, constituted 0.7% of the whole group. Patey's mastectomy was performed in above 50% of cases of all women, the remaining patients underwent conservative surgery. Only 10% of women have cancer at dissemination stage. Medical database of screening program contained incomplete descriptions of mammography results. Descriptions were not precise and not standardized.