International Journal of Health Services, 31(3):605-615, 2001.
by Samuel S. Epstein, Rosalie Bertell, and Barbara Seaman
Source: Cancer Prevention Coalition Mammography screening is a profit-driven technology. Contrary to popular belief and assurances by the U. S. media and the cancer establishment- the National Cancer Institute (NCI) and American Cancer Society (ACS) - mammography is not a technique for early diagnosis.
In fact, a breast cancer has usually been present for about eight years before it can finally be detected. Screening should be recognized as damage control, rather than misleadingly as "secondary prevention."
DANGERS OF SCREENING MAMMOGRAPHY
1. Radiation Risks
Radiation from routine mammography poses significant cumulative risks of initiating and promoting breast cancer. Premenopausal women undergoing annual screening over a ten-year period are exposed to a total of about 10 rads for each breast. The premenopausal breast is highly sensitive to radiation, each rad of exposure increasing breast cancer risk by 1 percent, resulting in a cumulative 10 percent increased risk over ten years. Furthermore, breast cancer risks from mammography are up to fourfold higher for the 1 to 2 percent of women who are silent carriers of the A-T (ataxia-telangiectasia) gene.
2. Cancer Risks from Breast Compression
Mammography entails tight and often painful compression of the breast, particularly in premenopausal women. This may lead to distant and lethal spread of malignant cells by rupturing small blood vessels in or around small, as yet undetected breast cancers.
UNRELIABLITY OF MAMMOGRAPHY
Falsely Negative Mammograms: Missed cancers are particularly common in premenopausal women owing to the dense and highly glandular structure of their breasts. Missed cancers are also common in post-menopausal women on estrogen replacement therapy.
Falsely Positive Mammograms: Mistakenly diagnosed cancers are particularly common in premenopausal women, and also in postmenopausal women on estrogen replacement therapy, resulting in needless anxiety, more mammograms, and unnecessary biopsies.
Over-diagnosis: Over- diagnosis and subsequent over-treatment are among the major risks of mammography. The widespread and virtually unchallenged acceptance of screening has resulted in a dramatic increase in the diagnosis of ductal carcinoma-in-situ (DCIS), a pre-invasive cancer. Some 80 percent of all DCIS never become invasive even if left untreated.
CONFLICTS OF INTEREST
The American Cancer Society (ACS) has close connections to the mammography industry. Five radiologists have served as ACS presidents, and in its every move, the ACS promotes the interests of the major manufacturers of mammogram machines and films, including Siemens, DuPont, General Electric, Eastman Kodak, and Piker.
The mammography industry also conducts research for the ACS and its grantees, serves on advisory boards, and donates considerable funds - produces advertising, promotional, and information literature for hospitals, clinics, medical organizations, and doctors; produces educational films; and, of course, lobbies Congress for legislation promoting availability of mammography services.
ACS promotion continues to lure women of all ages into mammography centers, leading them to believe that mammography is their best hope against breast cancer.