Results: Eighteen lesions all showed expansile and lytic bony destruction (100%), and 15 lesions located in long tubular bones (83.3%), and 12 lesions were eccentric (66.7%).

• 结果：18例病灶均表现为膨胀性溶骨性骨质破坏(100%25)，15例位于长骨(83.；3%25)，12例为偏心型(66