Published: September 2016/Affirmed 2019
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Affirmed September 2019: Since this guideline was published more than 3-5 years ago, the guideline development panel evaluated the content for currency, accuracy and validity. Based on their recommendation, the SSO, ASTRO, and ASCO have affirmed that an update to the guideline is not required.
This collaborative guideline focuses on several elements of optimal margin negative margin width for DCIS treated with breast-conserving surgery and whole breast irradiation. It defines positive margins and provides recommendations on negative margin width. It also discusses the impact on negative margin width of treatment with excision alone or with endocrine therapy; patient and tumor features; and DCIS in presence of invasive breast cancer. The role of margin width in choice of technique, fractionation and boost dose for whole breast irradiation is also covered.
Developed in collaboration with:
American Society of Breast Surgeons
Radiation Therapy for Breast Cancer (CME)
Summary Recommendation Table (SSO)
Guideline Summary PowerPoint Presentation (Slides)