Abstract
Congenital melanocytic nevi (CMN) are common skin tumors. Large and specially located nevi cannot be completely removed by surgery, posing the risks of both cosmetic deformities and potential malignancy. Nonsurgical treatments, such as laser therapy and physical dermabrasion, can overcome the limitations of surgery; however, the high rate of repigmentation remains an unresolved global challenge. We conducted a self-controlled observational study of a patient with a nevus on the chest. Two areas of the lesion were treated with an Er:YAG laser and 5% imiquimod cream was applied to one of these areas. After nearly 7-months of follow-up, we observed a significant difference in color between the two areas, suggesting that topical imiquimod may inhibit repigmentation and significantly enhance the effectiveness of laser treatment.
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