Complete response on MR imaging after neoadjuvant chemotherapy in breast cancer patients: Factors of radiologic-pathologic discordance.

•Analyzed pretreatment mammography and MR imaging features predict false negative results of rCR after NAC.•Calcification in mammography significantly associated with false negative results.•Multifocal multicentric lesions, and non-mass enhancement in MR imaging significantly associated with false negative results.•The luminal breast cancer subtype has a significantly high false negative rate when assessing rCR after NAC.