【摘要】 目的 探讨膝关节周围骨巨细胞瘤与软骨母细胞瘤的影像学鉴别诊断。方法 采用本院收集的并经病理证实的股骨远端和胫骨近端的32例骨巨细胞瘤和10例软骨母细胞瘤,统计常见的16种征象,对其进行统计学分析。骨巨细胞瘤26例行X线检查,25例行CT检查,18例行MRI检查;软骨母细胞瘤全部行X线检查,8例行CT检查,7例行MR检查。结果 16种征象中,瘤内钙化、分叶、病变长轴与载瘤骨长轴一致、病变横径大于载瘤骨直径1/2在二者发生率分别具有统计学意义。前二在软骨母细胞瘤的出现率大于骨巨细胞瘤,后二者相反。其余的12种征象的发生率无统计学意义。结论 瘤内钙化、分叶、病变长轴与母骨长轴一致、病变横径大于母骨直径1/2、病灶边缘到关节面的距离可以作为膝关节周围骨巨细胞瘤与软骨母细胞瘤具有统计学意义的鉴别征象。更多还原

【Abstract】 Objective To study imaging differential diagnosis of giant cell tumor and chondroblastoma of bone around the knee.Methods 32 cases with giant cell tumors of bone and 10 cases with chondroblastomas of distal femur or proximal tibia were collected.The common imaging signs(including 16 findings) were analysed statistically.Results In the 16 imaging findings,the incidences of intratumoral calcification,lobulated sign,the tumor’ s long axis consistent with sick bone long axis,and transverse diameter of the lesions to be large than that of the sick bone over 1/2 were statistically significant between two tumors.The incidences of first two findings above in chondroblastoma were higher than that in giant cell tumor of bone,and the latter two findings above were opposite.The rest twelve imaging signs were not of statistical difference between them.Conclusion Intratumoral calcification,lobulated sign,the ratio between the tumor and sick bone in diameter can be valuable imaging signs in differential diagnosis of giant cell tumor and chondroblastoma around the knee.更多还原