Pathology General 6952d48e Langerhan’s histiocytosis was previously known as A Eosinophilic granuloma B Pyogenic granuloma C Letterer siwe disease D Histiocytosis x High-Yield Explanation Langerhan’s histiocytosis was previously known as Histiocytosis X , it includes Eosinophilic granuloma Letterer siwe disease Hand Schuller Christian disease