Low-cost mass screening with mammography as a means of reducing overall mortality from breast cancer.

Screening mammography has made major contributions in the earlier detection of breast cancer. It is the only reliable means of identifying non-palpable cancers, and can detect many "minimal" breast cancers when they appear to be curable. Low-cost, high-quality mass screening mammography is indeed feasible and can be expected to reduce overall mortality from breast cancer. Recognition of the need and desire to provide the service are essential initial motivating factors.