v Osteoid osteoma is a benign bone tumor that occurs most frequently in men and boys between 7 and 25 years old .v Most patients experience pain that worsens at night and is promptly relieved by the administration of salicylates 。第1 页/ 共33 页v Typical radiographic findings of osteoid osteoma include an intracortical nidus, which may display a variable amount of mineralization, accompanied by cortical thickening and reactive sclerosis in a long bone shaft. 第2 页/ 共33 页v At CT, the nidus is well def
