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March 26, 2022 03:30 am

Half of Women Will Get a False Positive 3D Mammogram, Study Finds

An anonymous reader quotes a report from Axios: Half of all women getting 3D mammograms will experience a false positive over a decade of annual screening, a study published Friday in JAMA Network Open found. False positives -- when a mammogram is flagged as abnormal, but there is no cancer -- have always been a problem. But 3D mammography has been aggressively marketed by hospitals, doctors and some patient groups for its ability to provide higher image quality images -- and previous studies have found they result in fewer false positives. The researchers analyzed data from the Breast Cancer Surveillance Consortium on 3 million screening mammograms for more than 900,000 women ages 40-79. The screenings were performed between 2005 and 2018 at 126 radiology facilities. Researchers estimate over 10 years of getting 3D mammograms, 50% of women will experience at least one false-positive recall compared to 56% of women screened with 2D digital mammograms. Women with dense breasts or who were younger, as well as those who screened every year compared to once every two years, had a higher chance of a false positive. "Whenever you're called back for an additional workup, it's very stressful because women think they may have cancer," Diana Miglioretti, a lead author and professor and division chief of biostatistics at UC Davis Department of Public Health Sciences, told Axios. "Often it may take days to even weeks to get that resolved," she said. "The main thing is we want to alleviate women's anxiety over these false positives and understand they are very common."

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