Abstract
Photodynamic therapy (PDT) for the treatment of actinic keratosis has been shown to be effective and safe in large clinical trials published in the last 5 years. However, evidence has since emerged that raises questions or that introduces new issues, such as the management of field cancerization, fluorescence diagnosis and results in transplant recipients. There also remains a need for more studies comparing PDT to additional treatments. We review the literature on these new topics in PDT.
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