Breast cancer is the first cancer in women, it represents the first cause of death worldwide and a major public health problem and a real emergency of intervention and care, one woman in nine will develop this disease during her life. Only an early and precise diagnosis improves the possibilities of treatment and increases the chances of a complete cure. In the case of a confirmed breast cancer, it is decisive for the success of the treatment to determine the type of tumor and the stage of the disease as soon as possible. Every practitioner will be confronted daily with the diagnosis, treatment and monitoring of breast cancer. In order to help the physician in the management of this pathology, this book addresses the risk factors, the screening of breast cancer and its means, the clinical and radiological diagnosis, will spread on the various histological and immunohistochemical data which must imperatively exist for the therapeutic decision and predict the prognosis by the determinati