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Adding radiation decreases breast cancer recurrence

Radiotherapy after breast conserving surgery for breast cancer reduces recurrence and prevents development of additional breast tumors in older women with early stage breast disease, according to a new study. Published in the March 1, 2007 issue of CANCER, a peer-reviewed journal of the American Cancer Society, the study suggests that women also benefit from the recommended five years of tamoxifen treatment for hormone responsive tumors. Among women over 65 and treated with breast conserving surgery, the risk of local or regional recurrence increased up to 3.5 times if they did not receive radiation after their surgery.

Great strides have been made in breast cancer treatment. Breast conserving surgery in combination with radiotherapy and mastectomy provide women with two good options for their initial treatment. Augmenting surgery with hormone modulating drugs, such as tamoxifen, further improves survival and reduces recurrence.

Women over 65 are at the highest risk for breast cancer and make up half of those diagnosed. However, they are less likely to receive standard therapy, particularly radiotherapy after breast conserving surgery, than younger women. Making treatment recommendations for older patients, who may have more comorbidities than younger patients, is complicated by under-representation of older women in clinical trials and prognostic studies.

Led by Ann M. Geiger, M.P.H., Ph.D., of Wake Forest University School of Medicine and formerly of Kaiser Permanente Southern California, researchers retrospectively followed 1,837 women over 65 for ten years who were treated with surgery for early stage breast cancer to examine the impact of treatment on the occurrence of recurrent and additional breast tumors for this patient population. This analysis was part of a larger study led by Rebecca Silliman, M.D., Ph.D., of the Boston University Medical Center. It was conducted under the auspices of the National Cancer Institute-funded Can
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Source:John Wiley & Sons, Inc.


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