Even new developments in the diagnosis and new strategies in the management of breast cancer have succeeded in maintaining, and even reducing breast cancer mortality rates, but breast cancer incidence continues to increase in both developing and developed countries. The present book focuses on the main issues related to breast cancer: diagnosis, mutations in the main genes responsible for most hereditary breast cancer cases in Europe and Asia, and role of molecular markers in breast cancer treatment, in order to help physicians, researchers, and clinicians improve their knowledge of these issues.