This volume is the first attempt to summarize current knowledge about the underlying molecular and biochemical mechanisms controlling the metastatic phenotype. While all previous authors attempted to put their findings into a context for translation to the clinical situation, the state of the art does not fully allow this because the field of metastasis is relatively new. Nonetheless, the contents of this volume will be of use to members of the cancer research community and clinicians interested in developing and implementing novel forms of treatment for cancer.