The BI-RADS classification of MC differs for FFDM and DBT in @/@ cases DBT assigned lower BI-RADS classes compared to FFDM in @ clusters In @/@ DBT may have missed some malignant and high-risk lesions In @/@ the ` underclassification ' on DBT was correct , potentially avoiding unnecessary biopsies DBT may miss a small proportion of malignant lesions .