Mammogram Giant Adjusts as Doctors Cut Back on Breast Screening

"Doctors are questioning the gospel of the annual mammogram to detect cancer -- a potential blow to the biggest maker of mammography equipment.

Hologic Inc. shares slumped 2.8 percent Tuesday after the American Cancer Society published new guidelines calling for women to wait until age 45 instead of 40 to start annual mammograms, then slow the pace at 55 to screenings every other year."