The Impact of Breast Density Notification on Interval Cancer Rates

Interval cancer rates were at least similar or higher in the first 12 months compared to 13-24 months post screening for clients notified they had dense breasts, contrary to national reports of interval cancer detection rates. The clinical implications are two-fold: performance metrics for screening programs that notify women of their breast density may need refinement, namely interval cancer rate targets within 0-12 months, and breast density notification could lead to earlier diagnoses of interval-detected breast cancers.