Lying in bed one night in 2007, Peter Criss felt something strange: a small lump on his left breast

Controversy is brewing after some doctors are saying women can wait two years between mammograms and start them at age 50 rather than 40.

A new government task force says most women do not need a mammogram in their 40's and should get one every two years starting at age 50.

Most women don't need a mammogram in their 40s and should get one every two years starting at 50, a government task force said Monday. It's a major reversal that conflicts with the American Cancer Society's long-standing position.