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目的探讨骨良性纤维组织细胞瘤的影像学特征及相关的鉴别诊断。方法回顾性分析9例经手术病理证实的骨良性纤维组织细胞瘤的X线、CT和MRI资料。结果9例骨良性纤维组织细胞瘤均为单发病灶,大小为10 mm×15 mm×20 mm~50 mm×50 mm×60 mm不等,表现为类圆形或椭圆形骨质破坏区,边界清楚,其内无钙化或骨化,5例伴有完整的硬化环,环壁厚薄较均匀。6例有膨胀性改变,3例无膨胀性改变。4例同时行MR检查,2例在T1WI、T2WI上均呈低信号,信号均匀;2例在T1WI上呈低信号,在T2WI上呈高信号,病灶边界清楚,周围示低信号的硬化环。9例均无骨膜反应,未见软组织肿块。结论影像学检查能清晰地显示骨良性纤维组织细胞瘤的形态学特征,对典型病例,可以在术前做出正确诊断。
Objective To investigate the imaging features and related differential diagnosis of benign fibrous histiocytoma. Methods Nine cases of benign fibrous histiocytoma confirmed by surgery and pathology were retrospectively analyzed by X-ray, CT and MRI. Results All the 9 cases of benign fibrous histiocytoma were single lesions with sizes ranging from 10 mm × 15 mm × 20 mm to 50 mm × 50 mm × 60 mm, showing round or oval bone destruction, Clear boundary, there is no calcification or ossification, 5 cases with a complete sclerotic ring, wall thickness more uniform. Six cases had dilatory changes and three cases had no dilative changes. Two patients underwent MR examination at the same time. Two of them showed low signal on T1WI and T2WI, and the signal was uniform. Two patients showed low signal on T1WI and high signal on T2WI. The border of the lesion was clear and showed a low signal cirrhosis ring around. 9 cases were no periosteal reaction, no soft tissue mass. Conclusion Imaging examination can clearly show the morphological characteristics of benign fibrous histiocytoma. For typical cases, the correct diagnosis can be made before operation.