Abstract
Objective: Evaluate the criteria used in issuing mammography reports in Brazil between 2015 and 2021, in order to investigate its use for the diagnosis of early-stage breast cancer. Methods: This is a quantitative descriptive epidemiological study, in which data related to mammography were obtained through the Cancer Information System (SISCAN), delimiting the period 2015-2021. Results: During the study period, 15,923,115 mammograms were recorded, 99.81% of which were performed in female patients. It was observed that 98% of these exams had breast cancer screening as a clinical indication. Of these, 63% corresponded to the age group from 50 to 59 years old and 93.7% to the age group from 40 to 74 years old. The most frequent BI-RADS classification was 2, which corresponded to 48.5% of the reports. Conclusion: Most mammograms were classified as BI-RADS 2, and the main indication of the exam was for screening for breast cancer. It was possible to observe one in more than half the number of mammograms during the year 2020 due to a COVID-19 pandemic.