Topical photodynamic therapy using intense pulsed light for treatment of actinic keratosis: clinical and histopathologic evaluation

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Kim, Hyung Su; Yoo, Jong Yeop; Cho, Kwang Hyun; Kwon, Oh Sang; Moon, Sang Eun
Issue Date
Blackwell Publishing
Dermatol Surg 2005;31-7
Aminolevulinic Acid/*therapeutic useKeratosis/*drug therapyPhotochemotherapy/*methodsPhotosensitizing Agents/*therapeutic useTreatment Outcome
BACKGROUND: Photodynamic therapy (PDT) is suitable for the treatment of actinic keratosis, and, recently, topical PDT using intense pulsed light as a light source has been reported. However, evaluations of its therapeutic effects have been clinically based. OBJECTIVE: The objective of this study was to confirm the histopathologic resolution of actinic keratosis treated by topical PDT using intense pulsed light as a light source. METHODS: Twelve actinic keratosis lesions in seven patients were treated with 5-aminolevulinic acid-PDT using intense pulsed light as a light source. After a single treatment, the clinical response was assessed and histopathologic examinations were performed on clinically resolved lesions. RESULTS: Six of 12 (50%) lesions showed clinical clearance after a single treatment, but histologic examinations showed that only 5 of the 12 (42%) lesions had been removed. No complications, such as pigmentary changes or scarring, were observed. CONCLUSION: Intense pulsed light is potentially an effective light source for PDT. However, the determination of complete remission in actinic keratosis requires caution, and long-term follow-up or histologic confirmation may be required.
1076-0512 (Print)
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College of Medicine/School of Medicine (의과대학/대학원)Dermatology (피부과학전공)Journal Papers (저널논문_피부과학전공)
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