第四脑室内表皮样囊肿的MRI诊断与临床分析

发布时间：2018-04-17 01:14

本文选题：表皮样囊肿 + 磁共振成像　；参考：《临床放射学杂志》2017年01期

【摘要】：目的探讨第四脑室内表皮样囊肿的临床表现特点及MRI诊断与鉴别诊断价值。方法回顾性分析经手术病理证实的9例(男5例,女4例)第四脑室内表皮样囊肿患者的临床及影像资料,重点分析MRI特点及手术病理特征。结果 9例患者中,7例行磁共振平扫与增强检查,1例患者行磁共振平扫检查,1例患者直接增强扫描。T_1WI上6例呈低信号,3例呈混杂低信号;T_2WI上5例高信号,3例呈高低混杂信号;FLAIR上2例混杂稍高信号,2例低信号,3例等低信号,1例不均匀低信号;DWI上7例呈明显高信号,1例不均匀稍高信号,1例轻度高信号。静脉注入Gd-DTPA后,7例无强化,1例边缘见线状高信号。结论第四脑室内表皮样囊肿以先天性多见。MRI影像表现具有特征性,对病变诊断及鉴别诊断有重要价值。
[Abstract]:Objective to investigate the clinical features of epidermoid cysts in the fourth ventricle and the value of MRI in diagnosis and differential diagnosis.Methods the clinical and imaging data of 9 patients (5 males and 4 females) with intraventricular epidermoid cysts confirmed by surgery and pathology were analyzed retrospectively. The MRI features and surgical pathological features were analyzed emphatically.Results of the 9 patients, 7 cases underwent Mr plain scan and 1 case underwent Mr plain scan. 1 case underwent direct enhanced MRI. 6 cases showed hypointensity on T _ 1WI. 3 cases showed mixed low signal intensity on T _ 2WI. 5 cases were hyperintense on T _ 2WI. 3 cases showed high signal intensity on T _ 2WI.On FLAIR, 2 cases were mixed with slightly high signal intensity, 2 cases with low signal intensity, 3 cases with iso-low signal intensity and 1 case with heterogeneous low signal intensity on DWI, 7 cases showed obvious high signal intensity, 1 case showed heterogeneity and slightly high signal intensity, 1 case showed mild high signal intensity.Linear hyperintensity was seen in 1 case without enhancement in 7 cases after intravenous injection of Gd-DTPA.Conclusion Epidermoid cysts of the fourth ventricle are characterized by congenital. MRI findings, which are of great value in the diagnosis and differential diagnosis of the lesions.
【作者单位】：郑州大学第一附属医院磁共振科;
【分类号】：R445.2;R739.41

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