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椎管内胚胎性肿瘤的MRI诊断及其信号的病理基础 被引量:4

The MRI Diagnostic Study of Embryonal Tumors in Spinal Canal and Pathologic Manifestation of It's Signa Instensity
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摘要 目的:探讨椎管内胚胎性肿瘤的MRI表现特点,评价其诊断价值。材料及方法:经手术病理证实的椎管内胚胎性肿瘤8例,分析其MRI表现并与病理对照。结果:表皮样囊肿(5例)有4例表现为T1WI略低、T2WI高信号,1例为T1WI略高、T2WI等信号;皮样囊肿(1例)T1WI表现为略高及极高信号;畸胎瘤(2例)T1WI为等、高、低混杂信号。病变均具有等信号的包膜,均未见增强,表皮样囊肿及皮样囊肿均合并有多种脊柱及脊髓的先天畸形,畸胎瘤未见先天畸形。结论:椎管内胚胎性肿瘤MRIT1WI图像的MR信号具有特殊性,MR信号反映了瘤内组织成分,结合肿瘤多不增强及多伴有先天畸形特点。 Purpose: To discuss the role of MRI in the presentations and diagnosis of embryonal tumors in the spinal canal. Materials and Methods: The MRI data of 8 cases of embryonal tumors in the spinal canal were analyzed. combined with the surgical and pathological observations. Results: 4 of the 5 cases of epidermoids had the characteristics of moderate low signal intensity on T 1WI and high intensity on T 2WI, while the other 1 demonstrated moderate high signal intensity on T 1WI and iso intensity on T 2WI; Dermoids (1 case) demonstrated moderate to extremly high signal intensity on T 1WI. Teratomas (2 cases) heterogeneously demonstrated high, low or iso intense signal on T 1WI. All the lesions had a capsule demonstrating iso intensity and no contrast enhancement of T 1WI. Congenital deformation in the spine and spinal cord was complicated with dermoid and epidermoid, but not with teratoma. Conclusion: Different embryonal tumors in the spinal canal had their own characteristics in the signal insensity of T 1WI, which might demonstate the histology of tumor tissue. Because most embryonal tumors in the spinal canal demonstrate no contrast enhancement and are often complicated with congenital deformation, MRI is valuable in the differentiation of these tumor.
出处 《中国医学影像学杂志》 CSCD 1999年第1期5-7,共3页 Chinese Journal of Medical Imaging
关键词 NMR 成像 椎管内 胚胎性肿瘤 tumor spinal canal MRI
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参考文献7

  • 1孙吉林,张新船,张华宁,刘连祥,吴育锦.椎管内胚胎性肿瘤的MRI诊断[J].中华放射学杂志,1997,31(3):156-159. 被引量:20
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  • 3洪澄,林日贤,王承缘,周义成,漆剑频,胡军武,李建策.椎管内肿瘤MRI诊断[J].临床放射学杂志,1997,16(6):334-336. 被引量:17
  • 4洪澄,临床放射学杂志,1997年,16卷,334页
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  • 7戴建平(译),神经影像学手册,1993年,389页

二级参考文献3

  • 1李香凝,临床放射学杂志,1995年,14卷,199页
  • 2高培毅,中华放射学杂志,1994年,28卷,530页
  • 3隋邦森,磁共振诊断学,1994年,507页

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