Stafne bone cyst. Revision of four cases, one of them with bilateral affectation.

Stafne bone cyst of the mandible is the only described destructive bone lesion that is highly localized, nonprogressive, but nonhealing. Such defects usually occur unilaterally, however, bilateral defects are occasionally reported. This paper reports 4 cases of Stafne's bone cyst, one of which showed bilateral presentation. Only four previous cases of bilateral Stafne bone cyst have been reported in the literature. The bibliography is reviewed with regard to the incidence, plausible etiologic factors and methods of diagnosis of such lesions.