Heat therapy may help shrink tumors by damaging cells or depriving them of the substances they need to live. Research studies are underway to determine the use and effectiveness of hyperthermia in cancer treatment.
Laser therapy can be used to cut a very tiny area to remove very small cancers without damaging surrounding tissue. Lasers also are used to apply heat to tumors in order to shrink them and are sometimes used with drugs that are activated by laser light to kill cancer cells.
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