Genetic and Rare Diseases Information Center (GARD)


Other names people use for this condition
  • LCH
  • Histiocytosis X
  • Eosinophilic granuloma (historical term)
  • Letterer-Siwe disease (historical term)
  • Hand-Schüller-Christian syndrome (historical term)

Langerhans cell histiocytosis
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Langerhans cell histiocytosis is one of the three major classes of histiocytoses, a group of syndromes that involve an abnormal increase in the number of immune cells called histiocytes. It is suspected to be an autoimmune disease. The extra immune cells may form tumors, which can affect various parts of the body, especially the bones.[1] The underlying cause of the condition is unknown.[1][2] A variety of different factors are taken in consideration when determining the best treatment options for individuals with Langerhans cell histiocytosis.  


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