Situated in Villejuif, south of Paris, the Institut Gustave Roussy (IGR) is France’s largest cancer center, an international referral center for oncology, and an integrated center for patient care, research, and teaching. IGR is designated as a Comprehensive Cancer Center by the French National Cancer Institute and has an objective of developing more individualised and less invasive medicine, in part through investment in up-to-date technology. In line with this policy, the breast imaging section of the radiology department has recently evaluated a computer aided detection system (CAD).