Screening breast MRI in patients with history of atypia or lobular neoplasia.

Our goal was to determine outcomes of screening breast MRI in patients with prior history of atypia or lobular neoplasia (LN). Review of the MRI data base revealed 264/7482 (3.5%) screening MRIs in 145 patients with history of atypia or LN. Overall, 39/264 (14.7%) received an abnormal interpretation, with 7.2% BI-RADS 4 and 5 (19/264) and 7.6% BI-RADS 3 (20/264). PPV1 was 38.4% (six cancers in 39 BI-RADS 3, 4, 5); PPV3 was 28.5% (six cancers in 21 biopsies). Screening breast MRI use in this population is low (3.5%), although PPVs are comparable to other high-risk groups for which breast MRI is recommended.