Primary mandibular bone xanthoma. A case report.

We describe a case of a xanthoma located in the mandible of an 11-year-old boy. The lesion, apparently benign, did not produce pain. It did, however, produce mandibular expansion by infiltration. In jaws, xanthoma has been very rare; in order to diagnose primary xanthoma, it was necessary to discount other histological entities or the association of hyperlipoproteinemia. Treatment was the total excision of the lesion.