Abstract
Q-switched laser therapy is known to be highly effective in treating dermal melanocytosis and pigmented epidermal lesions. However, to our knowledge, there are no reports on the effectiveness of laser therapy for congenital nevi. We evaluated the clinical efficacy and side effects of normal-mode ruby laser therapy for congenital pigmented lesions containing abundant melanin. A normal-mode ruby laser (pulse duration, 0.3-1.0 x 10(-3) seconds; energy fluence, 10-30 J/cm2; and spot size, 10 x 10 or 15 x 15 mm) (Toshiba Corp, Tokyo, Japan) was used to treat 3 patients with congenital nevi at intervals of 1 to 4 months. In all 3 cases, the pigmented lesions were significantly reduced almost to the level of the surrounding normal skin after 4 laser treatments. The treated areas were virtually free of scarring, and the skin texture resembled that of the surrounding normal skin. Unsightly hair growth was also reduced. The normal-mode ruby laser was effective in treating congenital nevi and produced good cosmetic results. The risk of recurrence is unknown, but the 3 patients in our study did not have any recurrences during the 18- to 39-month study period.
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