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图1,2 左膝关节正侧位像:见左股骨下段内后方偏心性不规则骨质缺损区,大小约1.5ｃｍ×4.5ｃｍ,缺损区内有条状骨嵴影,周围有硬化带 图3,4 右膝关节正斜位像:右股骨下段内、外侧偏后方见多个不规则大小不等骨质缺损区,周围可见硬化带 非骨化性纤维瘤是一种较少见的良性骨
Figure 1 and 2 Left and right lateral views of the knee: See the posterior segment of the left lower femur with eccentric irregular bone defects, about 1.5cm x 4.5cm in size. There are strips of bone shadows in the defect area. 3,4 Right oblique knee joint image: In the inferior and right lateral femur, a number of irregular bone defects are found in the inferior part of the right femur. Peripheral sclerosis with non-ossifying fibroma is a rare benign lesion. bone