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Indeterminate cell histiocytosis

Disease definition

Indeterminate cell histiocytosis is a rare neoplastic disease characterized by multiple, and on occasion single, asymptomatic, smooth, red-brown papulonodules located on the face, neck, trunk and/or extremities which present a nonepidermotrophic histiocytic infiltrate with immunohistochemical features of both Langerhans and non-Langerhans cells (i.e. immunopositive for S100 protein and CD1a in the absence of Birbeck granules and langerin expression).


  • Synonym(s):
    • Indeterminate dendritic cell neoplasm
    • Indeterminate dendritic cell tumor
  • Prevalence: -
  • Inheritance: Not applicable 
  • Age of onset: -
  • ICD-10: D76.3
  • OMIM: -
  • UMLS: -
  • MeSH: -
  • GARD: -
  • MedDRA: -

Additional information

Further information on this disease

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