软骨样脊索瘤6例MR表现

Analysis of the MR features in chondroid chordoma:6 cases report and review of the literature

目的探讨软骨样脊索瘤的MR特征以提高其诊断水平。方法 回顾性分析6例经病理证实的软骨样脊索瘤的MR(均行增强扫描)表现。结果 4例发生于颅内(鞍旁、延髓、枕骨大孔区及右海绵窦各1例),2例位于骶骨;肿瘤呈广泛浸润生长5例,T1WI呈不均匀等低信号块影,其中2例可见斑片状中高信号影,T2WI呈不均匀高信号;6例增强扫描病灶均为不均匀强化;4例可见明显包膜形成,5例均可见明显软组织肿块。结论 MR可清晰显示软骨样脊索瘤的部位、范围、内部成分及与周围神经、血管的关系,具有较高的敏感性和一定特征性。

Objective To explore the MR features of chondroid chordoma with cases report and literature review. Methods A retrospective analysis was performed with MR in 6 cases with pathologically approved chondroid chordoma.All of them have enhancement scanning.Results Four cases were located in parasella,medulla,foramen magnum and right sious cavernosus separately,another 2 cases located in sacrum.5 cases was extensive infiltration.Signal intensities of the tumor presented low intermediate in T1WI,2 of them had speckle middle-high signal,and extremely homogeneous high intermediate on T2WI;Asymmetrical enhancement could be seen in all of the cases;4 cases showed obvious envelope and 5 cases had large soft tissue masses.Conclusion The MR could well display the location,size,interior ingredient of the tumor,as well as it＇s relationship with the adjacent nerves and vessels,so chondroid chordoma was finally confirmed diagnosis rely on pathological examination.