April 3, 2000 (Chantilly, Va.) -- Medical experts say there are several
reasons why a mammogram may fail to detect a cancerous tumor:
The technology. Mammograms involve squeezing a woman's breast between two
plates of glass -- a technique that is awkward at best. Old or badly maintained
equipment and poorly trained technicians can increase the odds of an inaccurate
The quality of a woman's breast. Mammograms aren't good at detecting
cancers in breast tissue that is dense or fibrous, as is common among female
athletes and premenopausal women.
The pace of medicine. With radiologists under pressure to read more films
more quickly, the risk of making mistakes has grown.
Studies on mammogram accuracy show that screenings miss anywhere from 5% to
17% of abnormalities. Yet many patients continue to believe that a
"clear" mammogram is the same as a clean bill of health.
By Hallie Levine Sklar
Young Women Who Get Breast Cancer Are More Likely to
Women who are diagnosed with breast cancer before age 40 have slightly
poorer prognoses than older women: Their five-year survival rate is about 82
percent, compared with 85 percent among women ages 40 to 74, according to the
American Cancer Society (ACS). Why? "Younger women are more likely to have
more aggressive tumors," explains Lisa Carey, M.D., medical director of the
University of North Carolina...
"Even though there is no perfect test, and no perfect doctor, and no
perfect reading, patients expect perfect results,'' says Phan Huynh, M.D., a
breast imaging specialist at the University of Texas Health Science Center in
Michael D. Towle writes regularly for WebMD on health and