Women under 40 without a family history of early breast cancer may not receive adequate surveillance with mammography alone and might require additional screening like ultrasound.

“so right now how many women young women we just say because the young women are gonna be more likely to have dense breast tissue do we have a sense of what percentage of them really are being uncovered meaning they're not getting adequate sort of surveillance with just mammography and would require at least ultrasound is that a third of women”