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Photodynamic therapy in dermatology--an update
Philipp Babilas1, Sigrid Karrer, Alexis Sidoroff
1Department of Dermatology, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93042 Regensburg, Germany.
Photodermatology, Photoimmunology & Photomedicine
|May 13, 2005
Summary
Topical photodynamic therapy (PDT) effectively treats skin cancers and inflammatory conditions. This minimally invasive treatment offers excellent cosmetic outcomes with cure rates comparable to standard therapies.
Area of Science:
- Dermatology
- Oncology
- Photomedicine
Background:
- Topical photodynamic therapy (PDT) is a recognized treatment for various skin conditions.
- It is effective for both dermatooncologic and inflammatory dermatoses.
- Newer topical photosensitizers, such as 5-aminolevulinic acid (5-ALA), minimize systemic side effects.
Purpose of the Study:
- To evaluate the efficacy of topical photodynamic therapy (PDT).
- To explore PDT's application in dermatooncology and inflammatory dermatoses.
- To highlight advancements in topical photosensitizers and light activation methods.
Main Methods:
- Utilizing topical photosensitizers like 5-ALA or methyl aminolevulinate.
- Employing incoherent lamps or LED arrays for light activation.
- Adjusting light dose and photosensitizer concentration to achieve desired effects.
Main Results:
- PDT demonstrates efficacy in treating actinic keratoses, Bowen's disease, SCC, and BCC.
- Therapeutic benefits are also observed in inflammatory conditions like localized scleroderma and acne vulgaris.
- For superficial tumors (<2-3 mm), PDT achieves cure rates equivalent to standard treatments.
Conclusions:
- Topical PDT is a valuable treatment option for specific skin cancers and inflammatory conditions.
- Its advantages include minimal invasiveness and superior cosmetic results.
- The development of topical photosensitizers enhances treatment safety and efficacy.