The national organized breast cancer screening program was rolled out nationwide in 2004. It includes a clinical examination and two mammograms per breast interpreted by a primary radiologist, followed, if necessary, by immediate diagnostic testing, as well as a routine second reading of normal images. Between 2004 and 2009, the number of women screened rose from 1,621,000 to 2,344,000, corresponding to a participation rate that increased from 40% to 52.3%. Early evaluation results for the program are presented for all departments. For 7.4% of women screened in 2009, the mammogram was abnormal, and the immediate diagnostic workup confirmed the abnormality in 42.9% of these women, or 3.1% of all screened women. The immediate diagnostic workup included a breast ultrasound in 75.4% of cases. A normal mammogram was associated with an abnormal clinical examination in 0.2% of cases. After the second reading, 1.3% of women were recalled. The cancer detection rates for the program were 6.8 in 2008 and 6.4 (provisional data) in 2009. Of all cancers detected, 6.4% were identified through the second reading. In 2009, 14.2% of cancers were in situ. Among invasive cancers, 35.9% were 10 mm or smaller, and 76.1% of those with known lymph node status showed no lymph node involvement. In 2009, for the second year, the program authorized digital mammography. Clear differences were observed between full-field digital (DR) technology on the one hand and analog and digital plate (CR) technologies on the other. DR mammography systems resulted in more positive first-readings, more detected cancers, but a lower positive predictive value of examinations after further evaluation and a smaller contribution from the second reading compared to the other two types of mammography systems. These conclusions should be interpreted with caution regarding CR digital technology, as this heterogeneous group includes devices with very different performance characteristics. These indicators remain consistent with European guidelines and French specifications, except for participation in the organized screening program, which remains insufficient given the coexistence with individual screening. (R.A.)