 There are no known, harmful effects of breast ultrasound, although the procedure itself may be uncomfortable for women with breasts which are tender or sensitive to gentle pressure. If an abnormality is seen on the ABUS examination or on the mammogram, the study doctor may recommend additional tests, which are the standard of care and might include a biopsy. If any potential abnormalities are observed from the ABUS that are not seen on the standard mammogram, the participant and the study doctor will be informed and any testing that may be ordered as a result of the abnormal ABUS will be the same standard tests that would be ordered for an abnormal mammogram.Other risks of participating in the study include: 