Clinical breast examination and breast self-examination. Past and present effect on breast cancer survival.

Increasing attention to self-detection of breast masses and clinical breast examination during this century have contributed to a progressive reduction in the size of breast cancers at detection and a progressive improvement in survival. Mammography is more sensitive than breast palpation for the detection of breast cancer, however, mammography does not detect all palpable cancers and additional interval cancers become palpable between screenings. Breast self-examination, clinical breast examination, and mammography are complementary screening modalities. In populations where mammography is not available or is not appropriate as a screening modality, clinical breast examination and breast self-examination are particularly important.