Abstract
Objetive:
to analyze breast cancer screening monitoring indicators in the female population using the Brazilian National Health System, from 2018 to 2019.
Methods:
this was a descriptive study based on Cancer Information System (SISCAN) data; screening indicators were calculated following deterministic linkage of the mammography and histopathology databases.
Results:
in 2018, 807,430 women aged 50 to 69 years were screened for breast cancer, 91% of whom had a benign result, 1.8% probably benign, 6.7% inconclusive results and 0.5% results suggestive of cancer; the positive mammogram rate was 9.0%; biopsy was estimated to be indicated for 1.6% of the women, 33.9% of whom had a malignant result, and the cancer confirmation rate was 5.4 per 1,000 women.
Conclusion:
high benign lesion loss to follow-up was identified; the positive mammogram rate was lower than the international parameter, but the cancer detection rate was adequate and the percentage of inconclusive mammograms was acceptable.
Keywords:
Breast Neoplasms; Mass Screening; Brazilian National Health System; Indicators (Statistics); Population Studies in Public Health
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a) Services with over 75% of mammogram screening with BI-RADS® category 1 or BI-RADS® category 2: b) Services with over 12% of mammogram screening with BI-RADS® category 0.
a) 6.7% BIRADS® 0 mammogram screening added to 0.284% BIRADS® 0 coming from BIRADS® 3 mammogram screening radiological control (1.8% x 15.8%); b) 1.02% post-ultrasound BI-RADS® 4 and 5 (7.0% x 14.5%) added to 0.03% BI-RADS® 4 and 5 after BIRADS® 3 radiological control (1.8% x 1.6%); c) 1.6% of women who needed biopsy multiplied by percentage of biopsies with malignant result (33.9%); d) Distribution of breast ultrasound results as per study by Zanello et al.