Spontaneous resolution of an eosinophilic granuloma of the mandible following open biopsy.

Langerhans cell histiocytosis X is a clonal proliferation of dendritic cells of the immune system, which can affect multiple organ systems and range in behavior from a benign inflammatory process to a much more aggressive process. Only few isolated cases have been reported in the jaws. This case represents an example of Langerhans cell histiocytosis X in the mandible, which resolved following incisional biopsy without any further surgical intervention.