Surveillance MRI Registry for Patients Who Had Breast Cancer With Dense Breast Tissue

Inclusion Criteria: * Participants 50 years of age or younger who has personal history of breast cancer and mammographically dense breast, per ACR Category C and D. * Participants must be 18 years of age or older. * Participants are being seen at MD Anderson for annual surveillance and scheduled for routine screening mammogram and/or DBT, with negative or benign findings. * Participants must not be pregnant or breast-feeding. If a Participant is of childbearing potential and is uncertain if the Participant could be pregnant or may be pregnant or as per local site standard of practice in women undergoing mammogram/DBT and MRI must have a blood test or urine study within 2 weeks prior to randomization to rule out pregnancy. A female of childbearing potential is any woman, regardless of sexual orientation or whether they have undergone tubal ligation, who meets the following criteria: 1) has not undergone a hysterectomy or bilateral oophorectomy; or 2) has not been naturally postmenopausal for at least 24 consecutive months (i.e., has had menses at any time in the preceding 24 consecutive months). * The Participants breast density must be known based on prior mammogram or agree to have mammogram or DBT prior to enrollment in order to determine breast density. Participants must have mammographically dense breasts based on American College of Radiology \[ACR\] Breast Imaging \[BI\]- Reporting and Data System Atlas (RADS) lexicon categories c or d (heterogeneous or extreme fibrogl…