In Langerhans' cell histiocytosis, radiological findings on temporal bone involvement show destructive bone lesions involving the mastoid, with the squamous part and middle ear less affected. Computed tomography (CT) is the preferred imaging modality for describing the extent of temporal bone involvement. CT also has an important role in monitoring disease activity and response to treatment. Bone scintigraphy seems to be less sensitive than radiography in detection of these lesions.