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ARPhotodynamic Therapy
This is a laser-induced photochemical reaction. A photosensitizer is intravenously injected 2 days before treatment, with cancer tissues selectively absorbing the photosensitizer while normal tissues absorbing very little. When the cancer is irradiated with specific laser light, cancer cells are destroyed and killed.
Indications
Advantages
√ Relative selectivity and tissue specificity for cancer cells.
√ Cure rate of 90% for early-stage superficial and luminal cancersCe.g., esophageal cancer,tracheobronchial/lung cancer).
√ Non-toxic, safe, and free of immunosuppressive or myelosuppressive effects.
√ Compatible with other treatments (surgery,radiotherapy, chemotherapy)and synergizes with them.
√ Short treatment duration.
√ Efficacy appears within 48-72 hours.
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