【摘要】 目的探讨骨脂肪瘤的影像学表现及其诊断价值。方法结合文献复习,回顾性阅读病理证实的10例骨脂肪瘤的X线平片和CT片,分析其征象。结果骨内脂肪瘤8例,分别位于股骨颈1例、股骨颈转子间区1例、髋臼4例、跟骨2例,X线平片表现为边界清或不清的不规则形透亮区,其内可见斑块状钙质样密度影,边缘可伴硬化。CT表现为类圆形或不规则形脂肪密度区,CT值为-22～-120HU,伴有厚薄不均的硬化边,其中6例病灶中央和(或)边缘可见小结节状钙化。骨旁脂肪瘤2例,分别位于股骨旁和髂骨旁,表现为骨旁边缘清楚的脂肪性肿块,呈半圆形凸向邻近软组织内,邻近骨皮质增生肥厚或伴伸向肿块的骨性突起或树枝状骨性结构。结论骨脂肪瘤以主要含有脂肪成分为共同特点,但不同部位骨脂肪瘤的影像学表现有所不同,CT能对其作出正确的术前诊断。更多还原

【Abstract】 Objective To study the imaging manifestations of bone lipoma and their diagnostic value. Methods Ten cases with pathologically proved lipoma of bone were analyzed, and the literature was reviewed. Results Eight of 10 cases were intraosseous lipomas which were located in the femoral neck (1 case), the femoral neck-intertrochanter area (1 case), the acetabulum (4 cases) and the calcaneus (2 cases),respectively. All foci showed oval or irregular radiolucent area on X-ray film and adipose tissue area with thin or thick sclerotic rim on CT images. The fat attenuation values within the lesion were in the range of -22 to -120 Hounsfield units. Focal intralesional calcifications in the center or margin within the intraosseous lipoma were present in 6 foci. The other 2 cases were juxtacortical lipomas, which showed the irregular adipose tissue area beside bone with reactive bony proliferation.Conclusion The lipoma of bone has common imaging features, that is, mainly composed of fatty tissue. However, the imaging manifestations of bone lipoma in different locations are somewhat different, and they could be diagnosed correctly before operation by using CT.更多还原