title: Hepatosplenomegaly, pancytopenia, and fever.
mesh_terms: D000741:Anemia, Aplastic / Q000235:genetics; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005334:Fever; D006529:Hepatomegaly / Q000235:genetics; D006646:Histiocytosis, Langerhans-Cell / Q000175:diagnosis; D006801:Humans; D008206:Lymphatic Diseases / Q000235:genetics / Q000473:pathology*; D008297:Male; D013163:Splenomegaly / Q000235:genetics