... knowledge and awareness of the effects of breast density.[ 9 ] Although the effects of breast density have been the ... less likely in BI-RADS category A (5.3%) than category B (9.4%), category C (10.5%), and category D (10.7%). When 62 ... for mammograms designated BI-RADS category D, with only 50.9% of mammograms designated as D on the first mammogram being ...