足跗骨软骨母细胞瘤的影像学表现  

The imaging features of the chondroblastoma in the tarsal bone

作　　者：彭俊红 周利华 黄利华 王慧明 阮学广 

机构地区：[1]普爱医院放射科,武汉430034 [2]普爱医院病理科,武汉430034

出　　处：《放射学实践》2012年第9期982-985,共4页Radiologic Practice

摘　　要：目的:总结分析足跗骨软骨母细胞瘤的影像学表现。方法:回顾性分析经临床病理证实的发生于足跗骨的5例软骨母细胞瘤的X线、CT及MRI表现。结果:5例均单发,2例位于跟骨,2例位于距骨,1例位于舟骨。X线主要表现为圆形或卵圆形透亮影,边界清楚,5例均可见病灶边缘硬化带形成,病灶内未见明显钙化。CT扫描显示肿瘤呈膨胀性生长,骨质破坏区边界锐利、硬化,灶周软组织肿胀,未见骨膜反应及软组织肿块,增强扫描呈轻度不均匀强化。MRI可见病灶形态呈分叶状,呈长、稍长T1信号,混杂T2信号,伴有灶周骨髓水肿及关节腔积液,灶周软组织水肿,增强扫描亦呈轻度不均匀强化。结论:足跗骨软骨母细胞瘤较少见,其影像学表现具有一定特征性。Objective：To analyze the imaging features of the chondroblastoma in the tarsal bone,and enhance the competence of diagnosis.Methods：The X-ray,CT and MRI imaging of 5 cases with pathology proved chondroblastoma which were located in the tarsal bone were retrospectively analyzed.Results：Of all the 5 cases,the locations of tumors were as follows：calcaneus（n=2）,talus（n=2）,navicular bone（n=1）.The main radiographic manifestations were round or ova1 translucent area with well-defined margin,sclerotic rim,and no calcifications in all lesions.On CT scan,the tumor demonstrated expansive growth patterns,by showing well-defined bone destruction with sclerosis rim.The adjacent soft tissue edema,without periosteal reaction and soft tissue masses were observed.The contrast enhancement was mild.Lesions demonstrated heterogeneous MR signal intensity on T1WI and T2WI.Lobular margins,adjacent bone marrow edema and joint effusion were found.The contrast enhancement was mild too.Conclusion：Characteristic imaging features could be revealed in the uncommon chondroblastoma of the tarsal bone,which were helpful in the diagnosis.

关 键 词：跗骨 软骨母细胞瘤 体层摄影术 X线计算机 磁共振成像 

分 类 号：R738.3[医药卫生—肿瘤] R814.42[医药卫生—临床医学]