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Int J Surg Oncol. 2012;2012:748196. doi: 10.1155/2012/748196. Epub 2012 Apr 8.

Role of the radiotherapy boost on local control in ductal carcinoma in situ.

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  • 1D√©partement d'Oncologie Radioth√©rapie, CRLC Val d'Aurelle-Paul Lamarque, 34298 Montpellier, France.

Abstract

Ductal carcinoma in situ of the breast is associated with low mortality rates, but local relapse is a matter of concern in this disease. Risk factors for local relapse include young age, close or positive margins, and tumor necrosis. Whole breast irradiation following breast-conserving surgery for ductal carcinoma in situ significantly reduces the risk of local relapse as compared to breast-conserving surgery alone. Studies point to similar outcomes between breast-conserving surgery plus radiotherapy and mastectomy, in the absence of extensive disease. A complementary boost to the surgical bed improves outcomes for patients with invasive breast cancer. However, the effect of this strategy has never been prospectively reported for ductal carcinoma in situ. Two randomized controlled trials assessing this issue are ongoing. This paper represents an update on available literature about radiotherapy for DCIS with a special focus on the role of a radiotherapy boost to the tumor bed.

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