Nearly half of all women who have had a mammogram to screen for breast cancer have been identified as having dense breasts. This makes it more challenging to detect breast cancer because dense tissue and tumors both appear white on a mammogram. That's one reason why it's recommended to have an additional screening done. But which one? Dr. Richard Sharpe, Jr., a Mayo Clinic radiologist, says it's crucial to talk with your healthcare team to find the screening method that is right for you. An MRI