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Stage 0' breast cancer surgically overtreated in US

Many women are receiving unnecessary treatment for a condition that is sometimes called Stage 0 breast cancer, the
findings of a new Canadian-led study suggest.

Women who undergo single or double mastectomies or radiation as treatment for ductal carcinoma in situ, or DCIS, do not appear to be increasing their chances of survival, the paper argues.

The vast majority of patients — nearly 97 per cent — are expected to still be alive 20 years after their diagnosis, based on the findings of the study done by researchers at Toronto's Women's College Hospital and the University of Toronto; it is published in the journal JAMA Oncology.

CBC News

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