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result sql = Photodynamic therapy in dermatology.

Photodynamic therapy in dermatology.

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result sql = Photodynamic therapy (PDT) is a modern therapy modality, based upon the application of a photosensitizing agent like aminolevulinic acid, a physiological precursor of porphyrins, onto the tissue followed by illumination with light of the visible wavelength spectrum. During this oxygen-dependent reaction, reactive oxygen species (ROS) are generated that have immunomodulatory or cytotoxic effects. PDT shows excellent cosmetic results especially for its key indication in dermatology - the treatment of non-melanoma skin cancer. The associated pain and the low tissue penetration are the most frequent limiting factors of PDT. We review basic principles and recent developments in photosensitizers and light sources. Key oncological and non-oncological indications are presented as well.

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The order of these related concepts is determined by a statistical analysis of the scientific literature. Highest-frequency concepts appear first.

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