CT scan use in kids fell over past decade

Children are receiving fewer CT scans now than a decade ago, dovetailing with a move to radiation-free MRI scans and ultrasounds, a recent study shows. Though several reasons might explain the shift, the study’s lead author, Dr. Michelle Parker, said the...

Is early breast cancer over treated?

More than 60% of all women over 40 in the United States have had a mammogram in the past two years. And 20% of mammograms detect something called ductal carcinoma in situ, or DCIS — also known as Stage 0 breast cancer.