Multiple agminated spindle cell nevi: unique clinical presentation and review.

A boy with agminated spindle cell nevi is described. Present within the area of involvement were congenital nevocellular and composite spindle/nevocellular nevi. Other unusual features included a dynamic pattern of growth and regression of the lesions, with the presence of halo nevi and background café au lait pigmentation. This unique presentation of multiple nevi is discussed in the context of previous reports of agminated spindle cell nevi.