目的 :为提高骨原发性恶性纤维组织细胞瘤的临床 X线诊断水平。方法 :回顾性分析 18例经手术和病理证实的本病临床 X线所见。结果 :骨破坏大而症状轻 ,好发长骨干骺端或骨端。主要骨改变有散在性斑片状或大片溶骨性破坏 ;单囊或多囊状轻度膨胀性破坏 ;大片或囊状骨破坏区内伴有多发小孔状破坏。一些病例破坏区见条状或网状骨嵴或 /和斑点状钙化影 ,破坏缘不但模糊不清 ,而且有类似良性瘤的清楚或锐利的边缘 ,伴轻度硬化 ,无骨膜反应或有轻度反应。结论 :本病的 X线表现多样性 ,诊断需结合临床 Objective: To improve the clinical X-ray diagnosis of primary malignant fibrous histiocytoma. Methods: A retrospective analysis of 18 cases of pathologically confirmed by the clinical X-ray findings. Results: Large bone destruction and mild symptoms, good long bone metaphysis or bone ends. The main bone changes have scattered patchy or massive osteolytic destruction; single or multiple cystic mild swelling damage; large or cystic bone destruction area associated with multiple small hole damage. Some cases of destruction of the area to see the strip or mesh bone crest or / and spotted calcification, not only vaguely vague edge, and similar benign tumor with clear or sharp edges, with mild sclerosis, no periosteal reaction or light Degree reaction. Conclusion: The X-ray manifestation of the disease diversity, diagnosis should be combined with clinical