Cho N, et al. - The researchers aimed at prospectively assessing the cancer yield and tumor characteristics of combined mammography with magnetic resonance imaging (MRI) or ultrasonography screening in women who underwent breast conservation therapy for breast cancers and who were 50 years or younger at initial diagnosis. In women 50 years or younger, the addition of MRI to annual mammography screening after breast conservation therapy improved detection of early-stage but biologically aggressive breast cancers at acceptable specificity. This study seemed to have implications for patient decision making on screening methods after breast conservation therapy.