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An In Vitro Approach to Photodynamic Therapy
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An In Vitro Approach to Photodynamic Therapy

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Guidelines for topical photodynamic therapy: update.

C A Morton1, K E McKenna, L E Rhodes

  • 1Department of Dermatology, Stirling Royal Infirmary, Stirling FK2 8AU, UK. colin.morton@nhs.net

The British Journal of Dermatology
|October 24, 2008
PubMed
Summary
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Topical photodynamic therapy (PDT) shows high efficacy for skin cancers like actinic keratoses and superficial basal cell carcinoma, offering superior cosmetic outcomes. While effective for certain conditions, PDT is not recommended for squamous cell carcinoma.

Area of Science:

  • Dermatology
  • Photomedicine

Background:

  • Topical photodynamic therapy (PDT) is increasingly studied for various dermatological conditions.
  • Evidence for its efficacy and long-term outcomes is accumulating.

Purpose of the Study:

  • To review the efficacy and safety of topical PDT for specific skin conditions.
  • To evaluate its role in skin cancer prevention and management of other dermatoses.

Main Methods:

  • Analysis of multicentre randomized controlled studies and long-term follow-up data.
  • Assessment of evidence for actinic keratoses, Bowen's disease, basal cell carcinoma, and other dermatological conditions.

Main Results:

  • High efficacy demonstrated for actinic keratoses, Bowen's disease, and superficial basal cell carcinoma, with superior cosmetic outcomes.

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  • Equivalent recurrence rates to standard therapies for Bowen's disease and superficial BCC; lower sustained efficacy than surgery for nodular BCC.
  • Potential role in skin cancer prevention and emerging evidence for acne treatment; insufficient evidence for psoriasis.

    • Conclusions:

    • Topical PDT is a highly effective treatment for specific non-melanoma skin cancers, offering excellent cosmetic results.
    • Its role in skin cancer prevention is promising, but it is not suitable for squamous cell carcinoma.
    • Further research is needed for conditions like acne, while safety and tolerability are generally good.