Interval breast cancers: absolute and proportional incidence and blinded review in a community mammographic screening program.

Purpose: To evaluate the performance of the first years since the beginning of a mammographic population-based screening program.

Materials And Methods: Women aged 49-69 were invited biennially for two-view film-screen mammography and double reading without arbitration was performed. Interval cancers (ICs) from 2001 to 2006 were identified using screening archives, local pathology archives, and hospital discharge records.