恶性软骨母细胞瘤的影像学诊断(附3例报告及文献复习)

The imaging diagnosis of malignant chondroblastoma-3 Case report and review of the literature

目的:探讨恶性软骨母细胞瘤的影像学诊断及鉴别诊断。方法:报告3例经手术病理证实为恶性软骨母细胞瘤的影像学资料,并结合文献分析良、恶性软骨母细胞瘤的影像学表现特点。结果:本组病例发生于长骨1例,扁骨2例。病灶呈类圆形骨质破坏,与周围分界较清。X线平片显示3例病灶为低密度骨质破坏,2例病灶无明显膨胀,1例轻度膨胀,1例病灶内见清晰钙化影。CT扫描3例病灶均表现为低密度骨质破坏,内有斑片或斑点状钙化。结论:恶性软骨母细胞瘤多表现为类圆形低密度骨质破坏区,病灶内伴有斑片或斑点状钙化。X线平片为软骨母细胞瘤首选检查方法,但CT扫描能较清楚的显示病灶内的微细改变。

Objective：To discuss the imaging diagnosis and differential diagnosis of malignant chondroblastoma. Methods ： Three cases of malignant chondroblastoma confirmed by operation and pathology were reported, and imaging findings between benign and malignant chondroblastoma were analyzed. Results： The lesion of 1 case was found in long bone, others involved in flat bones. The lesions appeared destruction of bone alike globe. The X -ray images all appeared as low density destruction of bone. The lesions of two cases had no visible expansion, but slight expansion was detected in the other, one case had clear calcification. CT examination all appeared as low density destruction of bone with patchy and stippled calcification. Conclusion： The imaging finds of malignant chondroblastoma mainly appears low density destruction of bone alike globe with patchy and stippled calcification. Radiography is the initial examination for malignant chondroblastoma, but CT scan gives more specific information of lesions.