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脊柱累及硬膜外原始神经外胚层肿瘤的CT与MRI表现 被引量:10

CT and MRI findings of extradural primitive neuroectodermal tumor
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摘要 目的:分析脊柱硬膜外原发性原始神经外胚层肿瘤(PNET)的CT及MRI表现特征。材料与方法:回顾性分析7例经病理证实的累及硬膜外的PNET的CT及MRI表现。结果:7例PNET,肿块信号强度不均匀,在T1WI上呈低信号4例、等信号3例,在T2WI上均呈高或稍高信号,增强扫描均可见不均匀强化,坏死囊变2例,6例累及椎体或/和附件,CT上表现为溶骨性骨质破坏。6例形成较大的椎旁软组织肿块,其中5例从扩大椎间孔向外蔓延,呈哑铃状。结论:脊柱硬膜外PNET的CT及MRI表现具有一定的特征性,病灶密度或信号不均匀,常累及椎骨及椎管,伴有椎间孔扩大,形成较椎管内肿物大的椎旁软组织肿块。
出处 《中国临床医学影像杂志》 CAS 北大核心 2011年第4期286-289,共4页 Journal of China Clinic Medical Imaging
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