How is photodynamic therapy applied in cancer treatment?
Photodynamic therapy (PDT) involves the use of a photosensitizing agent that is activated by specific wavelengths of light. Once activated, the agent produces a form of oxygen that kills nearby cancer cells. PDT is typically used for cancers on or just below the skin or in the lining of internal organs. Although it is not suitable for all types of cancer, it offers a less invasive option with fewer side effects compared to surgery or radiation therapy.