软骨肉瘤的影像表现及误诊分析

Research of imaging diagnosis in chondro sarcoma and analyses of misdiagnosis

目的探讨软骨肉瘤的影像学特征及误诊原因,提高其影像诊断水平。方法回顾性分析14例经病理证实的软骨肉瘤的X线、CT和MRI表现,并对其中3例误诊病例进行分析。14例均行X线平片检查,其中8例同时行CT检查,10例行MRI检查。结果 14例软骨肉瘤中,发生在骨盆6例,管状骨7例,椎体1例;11例表现为斑片状、虫蚀样的溶骨性骨质破坏,1例表现为偏心膨胀性骨破坏,显示骨性分隔及液-液平面,12例可见钙化或骨化,1例可见针状骨膜反应,8例可见明显软组织肿块。结论 X线平片及CT能清晰显示钙化、骨化,磁共振能准确显示病变范围,完善影像学检查能明显提高其诊断准确性。

Objective To explore imaging diagnosis and misdiagnosis of chondro sarcoma to improve diagnostic capacity. Meth- ods A retrospective analysis was made on X plain film,CT and MRI of 14 cases with pathologically approved chondro sarcoma and analyze of misdiagnosis 3 cases. All of them had conventional 14 X-ray films,8 cases had CT scanning and 10 cases bad MRI scan ning. Results The location of 14 cases included pelvis 6 ,long bone 7, vertebral body 1 ; 11 cases presented as moth eaten like or rot ten wood-like cortical destruction, lcase presented as eccentric and expanding bony destruction,and demonstrated multiple internal septations and fluid-fluid level, 12 cases showed calcification and ossificallion, lcase had aciular periosteal reaction,large soft tissue masses could be seen in 8 cases. Conclusion X plain film and CT can show calcification and ossificallion, MRI can precisely show the extent of the tumor,so combining with X plain film,CT and MRI can improve the diagnosing accuracy of chondro sarcoma.