Breast, Mammography, Screening, Cancer, Retrospective, Observational, Performed at one institution
T. Presa 1, M. Moreland2, A. Kumar3, J. K. Juttla4; 1London/UK, 2Maidenhead/UK, 3Slough/UK, 4Harrow/UK
Our study has shown that G3 invasive interval cancers are usually occult or not present in the screening mammogram (90%) and present soon after the screening mammogram. Although they are larger by the time of diagnosis, the majority are stage I, with no axillary involvement (76%).
The rate of interval cancers can be used as a performance indicator for a screening unit. A systematic and continued review of the interval cancers would allow the screen readers to get familiar with early radiological findings of G3 breast cancer (usually small asymmetric densities) and improve the quality of the service.