Some women who receive a false-positive result on a mammogram may not come back for routine mammograms in the future, according to results from a large study.
False positives on a mammogram are apparent abnormalities that, after further evaluation, are found not to be cancer. But the additional testing needed to rule out cancer can be time-consuming, costly, and stressful. Follow-up tests, such as a biopsy of the breast, have risks of their own.
To conduct the study, the researchers analyzed 3.5 million mammograms from about 1 million women who were screened in the United States between 2005 and 2017.
Among women who had a true-negative result, 77 percent returned to routine screening in the following 30 months.
By contrast, 61 percent of women who had a false-positive result that required a repeat diagnostic mammogram in 6 months (a short-interval follow-up exam) returned to routine screening, as did 67 percent of women who required a biopsy.
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