Cutaneous Rosai-Dorfman disease in a 3-year-old boy.

The cutaneous form of Rosai-Dorfman disease is very rare in childhood. The clinical spectrum is highly variable and histopathological study with immunohistochemistry is essential for the diagnosis. We present the case of a 3-year-old boy with the diagnosis of cutaneous Rosai-Dorfman disease and review the pediatric cases published in the literature.