【摘要】 目的　探讨非骨化性纤维瘤的影像学表现。方法　对经手术病理证实的 2 2例非骨化性纤维瘤的病理和影像学资料进行分析 ,其中男 12例 ,女 10例 ,年龄 10～ 35岁 ,平均 17岁。 2 2例均作X线平片检查 ,CT平扫检查 7例 ,MRI检查 2例。结果　 18例位于长管状骨 ,其中位于干骺端 14例 ,骨干 2例 ,骨端 2例 ;4例位于不规则骨 ,锁骨、肋骨、髂骨及上颌骨各 1例。 2 2例中病变最大长径 6 .5cm ,最小为 2 .0cm ,平均为 3.2cm ,长径与横径之比约为 2 .5 1;病变呈圆形或椭圆形 ,边缘呈轻分叶 17例 ;2 0例病变边缘有明显骨硬化带 ,2例位于锁骨及肋骨未见硬化带 ;19例病灶有分隔 ,3例无分隔 ;骨外形膨大 10例 ,无明显膨大 12例 ;1例合并病理性骨折。结论　发生于长骨或不规则骨的皮质或髓腔的局限性破坏区伴有清楚的硬化边应考虑诊断本病。更多还原

【Abstract】 Objective To study image findings of nonossifying fibroma.Methods The pathological and image findings fo 22 cases of nonossifying fibromas proved by operation were analysed.There were 12 cases of male and 10 cases female,with age ranging from 10 to 35 years(mean age 17 years).X-ray plain films were obtained in all 22 cases,CT images in 7 cases,and MRI in 2 cases.Results The tumors were located in long bone in 19 cases,in which 14 cases were located in metaphyses,2 cases in diaphyses and 2 cases in bone end,and 4 cases in irregular bone,which was seen in clavicle,rib,illum and maxilla respectively.The tumor maximum diamneter ranged from 2 to 6.5 cm,with mean diameter of 3.2 cm,and the ratio of longitudinal to transverse diameter was 2.51.The tumors were round,oral or mild lobular in 17 cases.The tumors were showed sclerotic borders in 20 cases,and no sclerotic border in 2 cases(clavicle and rib).Septum was demonstrated in 19 cases.Bone expasion was showed in one case.Conclusion If a tumor is located in cortex or marrow of long or irregular bone which is showed a welldefined lytic lesion with sclerotic rim,the diagnosis of nonossifying fibroma will be considered.更多还原