The addition of a screening ultrasound or MRI exam to annual mammography in women with an increased risk of breast cancer and dense breast tissue resulted in a higher rate of detection of incident breast cancers, according to a study published April 4 in the Journal of the American Medical Association. The authors noted downsides to both modalities, reinforcing the notion there may be no easy answer to the question of how to best deliver supplemental screening to women with an increased risk of breast cancer.