Results:All fibrous dysplasias in this review were polyostotic,8 originating in the frontal bone,6 in the sphenoid,5 in the ethmoid,3 in the zygoma,3 in the maxilla and 2 in the temporal bone.

• 结果:本组12例均为多骨性发病,其中额骨8例,蝶骨6例,筛骨5例,颧骨3例,上颌骨3例,颞骨2例。根据病变的形态和密度可分为三型:(1)变形性骨炎型5例;(2)硬化型5例;(3)囊变型2例。