Does Mammographic Detection of DCIS Prevent Invasive Breast Cancer

Abstract

With the advent of screening mammography, the number of diagnoses of ductal carcinoma in situ (DCIS) has grown substantially. Investigators in the U.K. assessed rates of DCIS diagnoses arising from screening mammograms from 2003 to 2007 in >5 million women (age range, 50–64) at 84 screening centers. They then compared frequency of DCIS diagnosis with incidence of interval invasive cancers (i.e., those found because of symptoms rather than through screening …