TUESDAY, Jul 27 (HealthDay News) -- The poorer expansion showing rate offering by mammography for women in their 40s is due some-more to the technology itself than characteristics of a younger woman's cancer, according to a new study.
For years, experts have good well known which mammography's opening is poorer for women in their 40s contra comparison women, and they've placed most of the blame on the idea which tumors typically grow faster in younger women.
That would meant which by the time they are at a distance detectable by mammogram, these tumors would have already been rescued by a slight clinical exam, anyway. Younger women's breast hankie is additionally denser, which can have it simpler for tumors to ''hide" on a mammogram.
But others have suspected which mammography's poorer opening between younger women is due some-more to the boundary of the technology.
The emanate is quite dire given experts at the U.S. Preventive Services Task Force updated their breast cancer screening discipline final November. Those discipline suggested which normal-risk women in their 40s no longer get a each year mammogram. The preference set off a firestorm of controversy which has not yet abated.
In the meantime, why are mammograms reduction apt to mark mildew in younger women?
"I set out to find out -- is it the disproportion in [women's] biology or technology?" pronounced Sylvia Plevritis, join forces with highbrow of radiology at the Stanford University School of Medicine, Stanford, Calif.
With her colleagues, she grown a breast cancer screening simulator, a mechanism make-believe indication which could guess the relations contributions of factors such as expansion growth contra expansion detectability on a mammogram.
Plevritis drew on interpretation for about 100,000 women from the SEER database (Surveillance, Epidemiology and End Results), a at large used source of health information. Her group looked at women elderly 40 to 49 and women elderly 50 to 69.
''This investigate says the tying cause is not the disproportion in doubling time of the breast cancer," Plevritis concluded. "The tying factor is the capability of the mammogram to acknowledge the tumor."
She forked out which she complicated women who had required mammograms only. "Technology with required mammography is usually not supportive enough," Plevritis said. "That explains 79 percent of the marked down detection rate." The characteristics of the cancer itself in younger women account for usually 21 percent of the shortfall in detection, the indication found.
The commentary were published online Jul 27 in the The Journal of the National Cancer Institute.
Plevritis pronounced which since she evaluated women who had required mammography only, the formula may be opposite with some-more modernized digital mammography. Some investigate has found digital some-more correct in detecting tumors in women 40 to 49, she said.
That's over the range of her paper, "but our work is suggesting which the opening of digital mammography in younger women will have a difference," Plevritis said.
Another reduction of her study, she said, is which they looked at usually invasive disease, not the early form of breast cancer good well known as ductal carcinoma in situ or DCIS. "The healthy story of DCIS is not good understood," she said.
For now, she said, younger women next age 50 competence cruise asking for digital mammograms. Advances in technologies are needed, she said, to better acknowledge breast cancers in younger women.
More information
There's some-more on breast cancer screening at the American Cancer Society.
Related Video
Harvard researchers have beheld an surprising enlarge in the series of women with breast cancer in building countries. So they have spearheaded an general expostulate to enhance investigate and accumulate applicable census data to proceed to residence the problem. VOA's Carol Pearson reports.