The last three decades have witnessed tremendous advances in the understanding and treatment of breast cancer. As a result, starting shortly before the 1990s, a persistent decrease in breast cancer mortality has been documented, primarily in the United States and in several European countries. Breast cancer, however, remains an important health problem. In this book, which is mainly dedicated to nuclear medicine, experts have thoroughly reviewed the achievements made in the diagnosis, monitoring and treatment of this disease. There is no doubt that breast cancer has always been one of the most appealing areas of cancer research; the vast number of new clinical and preclinical studies published every.