bcd900ce_Prevention__NOTES
[TOPIC] Breast Cancer [REC] B [NOTES] 
For biennial screening mammography in women aged 40 to 49 years, there is moderate certainty that the net benefit is small. Although the USPSTF recognizes that the benefit of screening seems equivalent for women aged 40 to 49 years and 50 to 59 years, the incidence of breast cancer and the consequences differ. The USPSTF emphasizes the adverse consequences for most women—who will not develop breast cancer—and therefore use the number needed to screen to save 1 life as its metric. By this metric, the USPSTF concludes that there is moderate evidence that the net benefit is small for women aged 40 to 49 years. For biennial screening mammography in women aged 50 to 74 years, there is moderate certainty that the net benefit is moderate. For screening mammography in women 75 years or older, evidence is lacking and the balance of benefits and harms cannot be determined.
Prevention
NOTES