After years of women returning for repeat lumpectomies because the margins of their tumor contain cancer, new guidelines are reducing these re-operations. Here’s a new study on the issue: http://jamanetwork.com/journals/jamaoncology/fullarticle/2630063?utm_source=facebook&utm_campaign=content-shareicons&utm_content=article_engagement&utm_medium=social&utm_term=060517#.WTVwtIWiO2E.facebook