X ray features of fibrous dysplasia of bone could be divided into four kinds of types: 1) Cystiform - expansibility change, 2) frosted glass-form change, 3) palisade form change, and 4) insect biting off form change.

• 骨纤维异常增殖症X线表现特征大致可分为四种类型:1)囊状膨胀性改变; 2)磨玻璃状改变;