Author Interviews, Breast Cancer / 07.11.2013
Breast Cancer: Breast-Conserving Treatment With or Without Radiotherapy for Ductal in-Situ Disease
MedicalResearch.com Interview with:
Mila Donker, MD
Resident in Radiation Oncology
Study monitor EORTC 10981-22023 AMAROS trial
The Netherlands Cancer Institute - Antoni van Leeuwenhoek hospital, Plesmanlaan 121, 1066 CX Amsterdam, Netherlands
MedicalResearch.com: What are the main findings of the study?
Dr. Donker: Results of EORTC trial 10853 which were recently published in the Journal of Clinical Oncology showed that breast conserving treatment combined with radiotherapy reduces the risk of local recurrence in women with ductal carcinoma in situ (DCIS).
Between 1986 and 1996, this phase III EORTC trial 10853 randomized 1010 women with complete local excision of DCIS to no further treatment (503 patients) or radiotherapy (507 patients). The risk of any local recurrence was found to be reduced by 48% in the patients who also received radiotherapy. The 15-year local recurrence-free rate was 69% for the group of patients receiving breast conserving surgery alone, but this increased to 82% for the group of patients who also received radiotherapy, and the 15-year invasive local recurrence-free rate was 84% versus 90%, respectively.
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