[Mechanism of cancer metastasis and its inhibition--a point of view from clinical aspects].

Metastasis is one of the most distinct but complicated biological phenomena in cancer. It is hard to decide the most important prospect which must be performed at the present as well as in future studies on cancer metastasis. However, the final goal of the studies on metastasis can be simply concluded as that metastasis should be prevented before dissemination. In this review, we discussed several points to do research in metastasis.