Unilateral acquired nevus flammeus in women.

Congenital nevus flammeus is a benign vascular tumor characterized by pink to pale red patches that thicken as the patient ages, producing a dull red to reddish blue, cobblestone-textured plaque. We present the cases of 3 women with unilateral acquired nevus flammeus on the cheek whose lesions resolved after minimal treatment with a 585-nm pulsed dye laser. The etiology of acquired nevus flammeus is reviewed and tumor response rates to laser surgery are discussed.