神经细胞瘤的MRI表现及鉴别诊断

发布时间：2018-03-03 11:27

本文选题：神经细胞瘤　切入点：磁共振成像　出处：《临床放射学杂志》2015年02期 　论文类型：期刊论文

【摘要】：目的探讨神经细胞瘤患者临床及MRI特征,旨在进一步提高其术前诊断的准确性。方法回顾性分析我院2009年1月至2014年1月收治的29例经手术及病理证实的神经细胞瘤患者的临床资料和MRI信号特点,所有病例术前均行MRI常规及增强扫描,其中3例中枢神经细胞瘤(CNC)和1例脑室外神经细胞瘤(EVN)行DWI检查,2例CNC行MRS检查。结果 29例神经细胞瘤中,CNC 21例,病灶均位于侧脑室内,其中19例位于Monro孔区,2例位置偏后附于透明隔;肿瘤呈浅分叶状团块,信号不均匀,T1WI多呈等或稍低信号,T2WI多呈等或稍高信号,FLAIR像呈高信号,3例DWI呈高信号,21例边缘或内部出现信号与脑脊液相近的囊变,13例肿瘤内部或边缘可见流空血管影,10例肿瘤边缘可见"绳索征"。EVN 8例,病灶位于大脑半球3例,小脑4例,脊髓1例;7例为囊实性,1例为实性,T1WI多呈等信号,T2WI呈高信号,1例有出血,1例有流空血管影;29例神经细胞瘤FLAIR像上实质部分均呈高信号,增强扫描均有不均匀强化。结论中枢神经细胞瘤有一定的影像学特点,结合患者发病年龄、病变位置可提高本病的确诊率,对于EVN,囊实性且实质部分FLAIR像及DWI上呈高信号应想到此病的可能,但其影像学特点仍需总结,确诊仍需病理检查。
[Abstract]:Objective to investigate the clinical and MRI features of neuronal tumor patients. Methods the clinical data and MRI signal characteristics of 29 patients with neuronal tumor confirmed by operation and pathology from January 2009 to January 2014 were retrospectively analyzed. All patients underwent conventional and enhanced MRI scan before operation. DWI was performed in 3 cases of central nervous cell tumor and 1 case of neurocytoma of the brain. MRS was performed in 2 cases of CNC. The lesions were located in the lateral ventricle, in which 19 cases were located in the Monro foramen and 2 cases were located in the septum pellucidum. Hyperintense flair images on T2WI in 3 cases of DWI with high signal intensity or high signal intensity in 21 cases with cystic degeneration similar to cerebrospinal fluid (CSF), emptiness was observed in 13 cases of tumors with internal or internal signal intensity similar to cerebrospinal fluid (CSF). "rope sign". EVN was observed in 8 cases. The lesions were located in the cerebral hemisphere in 3 cases, in the cerebellum in 4 cases, in the spinal cord in 1 case as saccular solid tumor in 1 case, in solid T _ 1WI in 1 case, in hyperintensity on T _ 1WI in 1 case, in hemorrhage in 1 case, in 29 cases of neuronal tumor in 29 cases, in the upper parenchyma of neuronal tumor. Conclusion there are some imaging features in central nervous cell tumor. Combined with the age of onset, the location of the lesion can improve the diagnosis rate of the disease. For EVN, the possibility of this disease should be considered, but its imaging features still need to be summarized, and the diagnosis still needs pathological examination.
【作者单位】：南方医科大学珠江医院放射科;
【分类号】：R739.4;R445.2

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