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Positive response of a recurrent keloid scar to topical methyl aminolevulinate-photodynamic therapy

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A 36-year-old Caucasian female of Iranian origin presented with a persistently raised dermal lesion under her chin, confirmed histologically to be a keloid scar. There was a 4-year history of a negative response to a range of conventional treatments including topical silicone gel sheets, steroid creams, steroid injections and surgical excision. In view of treatment failure and an in vitro study indicating a positive effect of photodynamic therapy (PDT) on keloid fibroblasts, we treated our patient's lesion with five sessions of methyl aminolevulinate photodynamic therapy (MAL-PDT) over a period of 5 months. Following this treatment regime, her keloid scar had considerably reduced in size and become flattened. The surface of the keloid also became smooth, with attenuation in erythema at the margin as well as an improvement in the colour of the scar, which was better matched to the surrounding skin. There was no recurrence at 1-year follow-up and this treatment resulted in an overall acceptable cosmetic outcome. This case report presents PDT as a potential treatment option for persistent keloid lesions unresponsive to conventional scar modulation therapies and suggests a need for further research in this area.
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Keywords: keloid disease; methyl aminolevulinate-photodynamic therapy; raised dermal skin scarring

Document Type: Research Article

Affiliations: 1: Photobiology Unit, Dermatological Sciences, Epithelial Sciences Research Group, Manchester Academic Health Sciences Centre, University of Manchester, Salford Royal NHS Trust, Manchester, UK 2: Plastic and Reconstructive Surgery Research, Epithelial Sciences Research Group, Manchester Academic Health Sciences Centre, University of Manchester, Wythenshawe Hospital, Manchester, UK 3: Regenerative Medicine, Developmental Biomedicine Research Group, University of Manchester, Manchester, UK

Publication date: 2010-12-01

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