Background: Diffuse widespread actinic keratoses are difficult to treat, have a tendency toward higher recurrence rates, and therefore require ablative treatment. Laser resurfacing is one of the treatment modalities that can treat whole surface areas.
Objective: To evaluate patients who underwent laser resurfacing for widespread actinic keratoses with long-term follow-up for recurrence rates, time until new lesions occur, and the most common side effects.
Methods: Retrospective case-control study from 25 patients who underwent laser resurfacing for widespread actinic keratoses on the scalp, forehead, or full face at our department. Follow-up varied from 7 to 70 months. Recurrence rates, adverse effects, and improvement were analyzed through chart analysis.
Results: The mean average follow-up was 39 months. Forty-four percent of the patient shad no recurrence during the time period. Fifty-six percent of the patients developed new lesions after treatment but only a few. Of the recurrences, 20% occurred within 1 year and 36% occurred after 1 year. The most common short- and long-term side effects were infections (12%), hypopigmentation (48%), hyperpigmentation (8%), acne (12%), milia (12%), scar formation (8%), and atrophic and/or easily bruised skin (20%).
Conclusion: Laser resurfacing is an effective treatment modality for diffuse widespread actinic keratoses with long-term recurrence-free intervals.
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