- Benign osseous lesion that results from the abnormal proliferation of Langerhans cells.
- Eosinophilic granuloma is the non malignant, localized form of the disease.
- The posterior part of the mandible is the most common site. The lesions may be solitary or multiple and the involvement of the jaws is relatively common.
- Radiographically usually appears as a periapical or inter radicular radiolucency with well or relatively ill defined borders. Most often the lesions are multiple with irregular borders and cortical infiltration is observed.
- Clinically in some cases the condition resembles periodontal disease and teeth mobility or teeth loss is observed.
- Eosinophilic granuloma has a good prognosis after treatment but in some cases recurrence is observed.