Denouement and Discussion
Mastocytosis is a disorder characterized by the accumulation of an increased number of mast cells in the skin, and, sometimes, in other organs of the body. Systemic mastocytosis is more common in adults than in children. Three forms of this disorder occur in children: (1) solitary or few lesions known as mastocytomas (Fig 1); (2) generalized lesions (urticaria pigmentosa) (Fig 2); and (3) diffuse infiltration of the skin (diffuse cutaneous mastocytosis).A mastocytoma is a skin-colored to light brown nodule or plaque that is present at birth or develops in early infancy. The lesions may be found on any body
Truhan AP, Tunnessen WW. Picture of the Month. Am J Dis Child. 1992;146(12):1473–1474. doi:10.1001/archpedi.1992.02160240083026
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