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Study Questions on Early Treatment of Stage 0 Breast Cancer

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The study, which appears in the Journal of the American Medical Association (JAMA) Oncology this week, found that women treated for ductal carcinoma in situ, a group of abnormal cells found in the milk duct, were not significantly less likely to die of breast cancer than women on average.

He suggests the research shows it is the former, though it is a curable form of cancer in the vast majority of cases.

Women with the diagnoses were treated with a lumpectomy (a surgical treatment that removes a lump from the breast), lumpectomy with radiation therapy, or mastectomy (full surgical removal of the breast). However, researchers studied 100,000 women diagnosed with DCIS for 20 years, and found 97% of them did not die from breast cancer after undergoing treatment. The death rates were twice as high for those younger than 35 and in blacks – but still lower than those with more common invasive breast cancer. This factor comes into focus while analyzing results of the study in relation to prostate, colon and breast cancers. They reviewed age at diagnosis, race/ethnicity, pathologic features, date of second primary breast cancer, cause of death, and survival.

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