United States Preventive Services Task Force screening mammography recommendations: science ignored

Area of Science:

• Oncology
• Preventive Medicine
• Medical Imaging

Background:

• The United States Preventive Services Task Force (USPSTF) currently recommends against screening mammography for women aged 40-49 and biennial screening for women aged 50 and older.
• This recommendation is based on an assessment of the benefits and harms of screening mammography.

Purpose of the Study:

• To critically examine the scientific evidence reviewed by the USPSTF regarding mammography screening guidelines.
• To estimate the mortality benefits and potential harms of screening mammography across different age groups, particularly for women aged 40 and older.

Main Methods:

• Utilized evidence made available to the USPSTF for benefit and harm estimations.
• Employed Cancer Intervention and Surveillance Modeling Network (CISNET) modeling to compare lives saved under various screening scenarios.
• Analyzed USPSTF's summary of evidence to determine the frequency of harms associated with screening mammography by age.

Main Results:

• Annual screening mammography for women aged 40-84 demonstrates the greatest mortality reduction, averaging 39.6%.
• This regimen saves 71% more lives than the USPSTF's recommended biennial screening for women aged 50-74 (23.2% mortality reduction).
• For women currently aged 30-39, annual screening from age 40-84 could save an additional 99,829 lives (with full compliance) or 64,889 lives (with 65% compliance) compared to USPSTF recommendations.

Conclusions:

• The evidence strongly supports the mortality benefit of annual screening mammography starting at age 40.
• Potential harms for women aged 40-49, including recall for workup, false positives, and radiation-induced cancer, are minor.
• Annual mammography screening from age 40 to 84 represents a more effective strategy for saving lives than current USPSTF guidelines.