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The results of ORL organ tumor photodynamic therapy with the use of Phtalocyanine Al and multiple seances of laser irradiation are presented. The possibility to decrease the concentration of putting in preparat in accordance with laser irradiation tactics was investigated. Process of tissues necrotization for big and difficult for access for laser irradiation tumors have been investigated. Estimation of photosensitizer distribution character for local injection have been carried out. Principal possibility to use local injection of photosensitizer for photodynamic therapy has been showed.

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