#histiocytosis  a blood disease characterized by an abnormal multiplication of macrophages
  supertype:  #blood_disease__blooddisease__blood_disorder__blooddisorder  a disease or disorder of the blood
  subtype:  #Hand-Schuller-Christian_disease__Schuller-Christian_disease  inflammatory histiocytosis associated with disturbance of cholesterol metabolism; occurs chiefly in young children and is characterized by cystic defects of the skull and diabetes insipidus

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