<prompt> Localised Langerhans cells histiocytosis affecting head and neck isLetterer-Siwe diseasePulmonary Langerhans cell histiocytosisHand-Schuller-Christian diseaseEosinophilic granuloma  <response>: d. Eosinophilic granulomaRef: Nelsons 20e p 2484-2489, Ghai 8e p 620-623Eosinophilic granuloma: Bone lesions, with no visceral involvement; Localised; affects head and neck 