When breast MRI is used to determine the extent of local disease, the management changes, resulting in improved outcomes. Studies have indicated that breast MRI plus mammography is better for detecting tumors. surgeons are now utilizing breast MRI to determine the extent of disease in women diagnosed with breast cancer. It has not been established how management of breast cancer patients has been affected by the use of breast MRI or how that management has affected the outcome for these patients. This retrospective chart review will document management and outcome for breast cancer patients who have had pre treatment breast MRI.