Abstract
Photodynamic therapy (PDT) with methyl aminolevulinate (MAL) has been suggested as a useful treatment option in a number of skin tumors, other than approved indications, and infections. However, evidence is poor because it is mainly supported by isolated case reports or small case series, often with conflicting results. To assess the effectiveness, tolerability and safety of off-label MAL-PDT in daily clinical practice in 20 Italian hospitals, a retrospective observational study of medical records of patients treated for off-label oncologic and infectious skin conditions was carried out. In all patients standard treatment options had been either ineffective, unacceptably toxic, or medically contraindicated. Clinical data from 145 patients were analyzed. Actinic cheilitis showed a complete remission (CR) in 27 out of 43 treated patients and CR was maintained at follow-up. CR was registered in 3 of 8, 5 of 8 and 10 of 17 treated patients who were affected by extra-mammary Paget‘s disease (EMPD), erythroplasia of Queyrat (QD), and invasive squamous cell carcinoma (SCC), respectively. Five out of 19 patients with cutaneous T cell lymphoma had a complete remission. Cutaneous B-cell lymphoma, malignant fibrous histiocytoma, mastocytosis and nevus sebaceous were not responsive. Warts were treated in 30 patients and 15 had a complete remission. However, periungueal and plantar lesions were much more responsive than flat and common lesions. Condylomata showed a CR in 2 out of 5 male patients but treatment was painful. Bowenoid papulosis showed only a partial improvement. Atypical mycobacteriosis and chronic cutaneous leishmaniasis were successfully treated. Submammary candidal intertrigo and interdigital intertrigo with Pseudomonas aeruginosa did not improve. Among off-label oncological uses of MAL-PDT, the therapy of actinic cheilitis was the most investigated and showed the best results. In addition, MAL-PDT was used successfully in the majority of patients with QD, EMPD and invasive SCC. Treatment of specific cutaneous infections was well tolerated and gave a good therapeutic result in a few patients, but it does not seem to give substantial advantages over conventional treatment options.
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This article is published as part of a themed issue on current topics in photodermatology.
The Italian Group for Photodynamic Therapy: Piergiacomo Calzavara-Pinton, Maria Teresa Rossi, Raffaella Sala (Dermatology Department, University of Brescia), Nicola Arpaia (Dermatology Department II, University of Bari), Elena Cleopatra Burtica (Dermatology Department, University of Bologna), Paolo Amerio (Dermatology Department, Hospital SS. Annunziata, Chieti), Annarosa Virgili (Dermatology Department, Hospital S. Anna, Ferrara), Riccardo Rossi, Gionata Buggiani (Dermatology Department, University of Florence), Andrea Zanca (Dermatology Department, A.O. Carlo Poma, Mantua), Leonardo Bugatti (Dermatology Department, ASUR 5, Jesi), Dario Fai (Dermatology Department, Gagliano del Capo Hospital, Lecce), Elisa Cervadoro (Dermatology Department, USL 6, Livorno), Stefano Cavicchini (Dermatology Department I, University of Milan), Fabrizio Fantini (Dermatology Department, University of Modena), Gabriella Fabbrocini (Dermatology Department, University of Naples), Stefano Piaserico (Dermatology Department, University of Padua), Elisa Cervadoro (Dermatology Department, University of Pisa), Miriam Teoli (Dermatology Department, University Tor Vergata, Rome), Laura Eibenschutz (Dermatology Department, San Gallicano Institute, Rome), Fabrizio Arcangeli (Dermatology Department, Hospital S. Maria, Terni), Paolo Broganelli (Dermatology Department, University of Turin), Donatella Schena (Dermatology Department, University of Verona).
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Calzavara-Pinton, P.G., Rossi, M.T., Sala, R. et al. A retrospective analysis of real-life practice of off-label photodynamic therapy using methyl aminolevulinate (MAL-PDT) in 20 Italian dermatology departments. Part 2: Oncologic and infectious indications. Photochem Photobiol Sci 12, 158–165 (2013). https://doi.org/10.1039/c2pp25125f
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DOI: https://doi.org/10.1039/c2pp25125f