We report a 59-year-old woman presenting with a 2-month history of occasional bloody discharge from her right nipple and a palpable right breast mass on self-examination. The mammography revealed heterogeneously dense fibroglandular stromas of bilateral breasts, a lobulated mass in her right breast associated with faint pleomorphic microcalcifications, and, in addition, very faint focal granular microcalcifications in the left breast. Breast ultrasound revealed a lobulated and heterogeneous hypoechoic tumor with irregular margins at the right breast and a well-circumscribed tumor with heterogeneous echotexture at the left breast.