[Etio-pathogenic considerations on the development of multiple bone cysts in the mandible. Report of a clinical case].

A case of a mandibular cyst, missing of wall lining and containing some solid material is described. The histologic examination showed that this material consisted of osteofibrous tissue with regressive phenomena, inflammatory cells and hyperplastic nervous tissue. On the basis of clinical and histologic findings it is suggested to be a solitary cyst and the solid material due to a local response to an injury suffered by the patient who is a sport practitioner.