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Acta Derm Venereol. 2015 Jan;95(1):83-5. doi: 10.2340/00015555-1861.

Twelve-week treatment of lentigo maligna with imiquimod results in a high and sustained clearance rate.

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1
Centre of Evidence-Based Dermatology, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom. g.kirtschig@gmail.com.

Abstract

Topical imiquimod cream is increasingly applied in the treatment of lentigo maligna (LM), in particular for large lesions where surgery may lead to disfiguring scars. Published studies suggest that more frequent and prolonged treatment with topical imiquimod is associated with higher efficacy. In this study we prospectively treated 27 patients suffering from LM on the face with imiquimod 5% cream using an intensive treatment regimen consisting of daily applications for 12 weeks inducing skin inflammation for at least 10 weeks. Twenty-four patients completed the treatment as recommended, 23 were available for follow-up (mean 39 months). Clinical and histo-pathological clearance was observed in 20 patients after a mean of 14 weeks of treatment. Notably, histopathological examination of a skin biopsy showed clearance of the LM in all 24 patients, including those who still showed some hyperpigmentation at 4 weeks off treatment. A clinical recurrence occurred in only 1 of the 23 patients available at follow-up. These findings suggest that the efficacy of imiquimod can be improved by implementing a more intensive treatment regimen. Randomized controlled trials are needed to confirm our results and establish the role of topical imiquimod in the treatment of LM.

PMID:
24696093
DOI:
10.2340/00015555-1861
[Indexed for MEDLINE]
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