“…LCH includes diseases previously designated as histiocytosis X, eosinophilic granuloma, Letterer-Siwe disease, Hand-Schuller-Christian disease, Hashimoto-Pritzker syndrome, self-healing reticulocytosis, pure cutaneous histiocytosis, Langerhans cell granulomatosis, type II histiocytosis and nonlipid reticuloendotheliosis. 1 It is characterized by a proliferation of abnormal and clonal Langerhans cells in one or more body organs, such as the skin, bone, lymph node, lungs, liver, spleen and bone marrow. The disease can occur at any age, though commonly in infancy or early childhood, often with cutaneous lesions.…”