As a regular precaution against breast cancer, women are advised to undergo regular mammograms – but what if some tumors naturally disappeared on their own?
The findings of a controversial new study suggest that some breast cancers may disappear without intervention.
Norwegian and U.S. researchers examined the incidence of breast cancer among 50 to 64-year-old women who had mammograms every two years, comparing the results with those who were screened only once over the entire period of the study.
They found that the participants who were screened more frequently had a 22 percent higher risk of developing breast cancer than those who had less frequent mammograms.
Study co-author Dr Jan Maehlen told WebMD that some detected tumors are in fact "pseudo-cancers" that "will stop growing and shrink and disappear over a course of perhaps two years."
However, some experts – including the American Cancer Society – have warned people not to jump to conclusions based on the preliminary findings of a single study.
They recommended that women continue to get mammograms on a regular basis to help protect their health.