Method of treating cancer

摘要

There is provided a method of treating cancer. According to such a method, the affected tissue is irradiated effectively with activation light thereby obtaining an effect of the light treatment. The cancer therapeutic instrument used in the treatment method is equipped with a tube of which a tip is closed, a tip end of the tube being adapted to be inserted into a subject to be treated, and an optical fiber of which a tip end is adapted to be disposed slidably inside the tube.