In a study of men with early prostate cancer, half went into complete remission after light therapy, or vascular-targeted photodynamic therapy, and only 6 percent needed radical cancer therapy afterward, compared to 30 percent in the control group.

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In a study of men with early prostate cancer, half went into complete remission after light therapy, or vascular-targeted photodynamic therapy, and only 6 percent needed radical cancer therapy afterward, compared to 30 percent in the control group.