Since the first edition of Breast Cancer: Prognosis, Treatment and Prevention was published there has been a tremendous amount of new information related to the basic and clinical applications of this disease which can affect 1 of 8 people in the USA and 1 of 12 in European countries. This second edition of the book: Breast Cancer: Prognosis, Treatment and Prevention contains recent and very new information on the process of breast carcinogenesis, new prognostic factors and methods of prevention, the role of the breast as an intracrine organ, the enzymatic control in the bioformation and transformation of different hormones in the breast tissue, and the recent advances.