Multicentric reticulohistiocytosis (MR) is a rare disease in which an
infiltration of histiocytic cells causes destructive polyarthritis and
characteristic cutaneous lesions, It predominantly affects women betw
een the ages of 40 and 50 years. Effective treatment has not been well
established. We describe a case diagnosed in a 6-year-old girl. This
is the youngest patient with MR reported to date.