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目的:分析骨旁脂肪瘤的影像学表现特征,提高对该病的认识及术前影像诊断水平。方法:回顾性分析经病理证实的我院2例骨旁脂肪瘤的临床及影像学表现。结果:2例骨旁脂肪瘤,男女各1例,分别位于右侧股骨上段、左侧胫骨中下段骨旁软组织内。X线表现为骨旁软组织内的透光肿块;CT、MRI表现为骨旁脂肪密度或脂肪信号、有包膜的椭圆形分叶状肿块,边界清楚;邻近骨皮质形成突向肿瘤内部的珊瑚礁状或树枝状骨性突起。结论:骨旁椭圆形脂肪性肿块,伴有骨皮质突向肿块内的珊瑚礁状、树枝状骨性突起为骨旁脂肪瘤的影像学特征,具有重要的诊断价值。
Objective: To analyze the imaging features of periosteal lipoma and to improve the understanding of the disease and the diagnostic value of preoperative imaging. Methods: The clinical and imaging findings of 2 cases of periosteal lipoma confirmed by pathology were retrospectively analyzed. Results: Two cases of periosteal lipoma, one male and one female, were located in the right femur and the left side of the proximal tibial soft tissue. The X-ray showed translucent mass in periosteal soft tissue. The CT and MRI showed perivascular fat density or fat signal, with enveloped oval lobular mass with clear boundary. The adjacent cortical bone formed coral reef Shaped or dendritic bony protrusions. CONCLUSION: The paravertebral oval fatty mass with coral reef-like dendrites and the dendritic bony prominences are the imaging features of periosteal lipoma, which has important diagnostic value.