Breast MRILeft breast enhancing irregular masses corresponding with the mammographic sites of biopsy-proven invasive ductal carcinoma (IDC), measuring 15 mm at 12 o'clock subareolar region (red circle) and measuring 10 mm at 1 o'clock region, 5 cm from nipple (blue circle). There is no abnormal enhancement at the site of biopsy-proven ductal carcinoma in situ (DCIS) in the upper outer quadrant, 5 cm from nipple.