AdvertisementStudies Reignite Mammography Debate For Middle-Aged WomenApril 30, 2012Rob SteinfacebookEmailKaren Lindsfor, a professor of radiology and chief of breast imaging at the University of California, Davis Medical Center, examines the mammogram of a patient with heterogeneously dense breast tissue. Lindfors is among those doctors who say there was insufficient evidence to support the idea that additional screenings would detect cancers earlier. (AP)