According to the National Comprehensive Cancer Network, preoperative MRI before breast-conserving surgery should be reserved only for special circumstances. New research that found no association between preoperative MRI and positive margin status supports this recommendation, which is also endorsed by the American Society of Breast Surgeons’ (ASBrS’s) Choosing Wisely campaign.
Since 2014, when positive margin status was defined by the Society of Surgical Oncology and the American