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Treatment for women with a type of early breast cancer called ductal carcinoma in situ (DCIS) might not be doing enough to prevent deaths from the disease, says a study published online Sept. 16, 2020, by JAMA Network Open. The study sought to determine whether women diagnosed with DCIS had a higher risk of dying from breast cancer than women who did not have the disease. They looked at 144,524 women who were diagnosed with DCIS from 1994 and 2014 and then treated for the condition. Researchers compared them against women without DCIS from the general population. They found that the women with DCIS had three times the risk of dying of breast cancer in the follow-up period, which ran until December 2016, than women without DCIS. Study authors suggest ways that might identify which women with DCIS need more aggressive therapy to prevent breast cancer death.
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