The local treatment of metastases is based on the natural history of the cancer and its modifications following medical treatment. Local treatment of metastases may be a component of the global treatment of the disease. Local treatment of metastases often is entertained for symptomatic relief. There is a theoretical analogy between surgery, the gold standard of local treatment, and more recent interventional radiology procedures. Local treatment may sometimes lead to discontinuation of medical therapy, either permanently or temporarily, and may at times provide prolonged complete response. The purpose of this article is to further the understanding of the place of local treatment in patients with metastatic solid tumors.
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