Photodynamic therapy for in situ squamous cell carcinoma on chronic radiation dermatitis after photosensitization with 5-aminolaevulinic acid

The accessibility of the skin to light treatment, as well as the developmen ts made by dermatologists in photodynamic therapy (PDT), creates an excitin g apportunity to include it as a part of our standard therapeutic armamenta rium. We report it 63-year-old man with an in situ squamous cell carcinoma located an a chronic radiodermitis area in a finger, treated successfully w ith PDT. PDT appears to be a viable alternative to conventional therapy for in situ squamous cell carcinoma as well as for other superficial tumours o f the skin.