Answer:
Syringocystadenoma papilliferum is usually a verrucose lesion that occurs most commonly on or near the scalp. It is a hamartomatous growth that frequently develops within an associated organoid nevus of the nevus sebaceus type. These lesions often begin to develop during childhood and vary in size and appearance. They may be bulbous and exude fluid. Small lesions may be umbilicated and resemble molluscum contagiosum. Foci of basal cell epithelioma occur in about 10% of the lesions. Treatment consists of full-thickness excision of the lesion and any surrounding sebaceous nevus.