Eosinophilic Granuloma

  • Bone lesion with lipid laden histiocytes
  • Look like tennis racket cell in bet eosinophils
  • Letterer – Siwe
    • Fulminant & death by 2 months
  • Hans – Schuller – Christian
    • Diabetes insipidus
    • Pancytopenia
    • Skull involvement