摘要
目的:探讨侧脑室室管膜瘤的MRI表现特征。材料和方法:回顾分析经病理证实的38例侧脑室室管膜瘤,所有患者均行了MRI平扫和增强扫描,分析肿瘤部位、大小、生长方式、信号特点及强化方式,有无囊变、出血。结果:大部分肿瘤在T1WI像上呈等或低信号;在T2WI像上呈高信号。约73.7%的肿瘤可见囊变,出血少见。大部分肿瘤边缘不整,22例(57.9%)肿瘤跨脑室壁浸润邻近脑实质,30例(78.9%)肿瘤侵及对侧侧脑室或三脑室。增强扫描大部分肿瘤(89.5%)肿瘤呈不均匀显著强化,4例肿瘤呈轻度不均匀性强化。结论:侧脑室室管膜瘤MR表现具有一定的特征性,了解这些特征,有助于侧脑室室管膜瘤术前诊断和鉴别诊断。
Objective: To study the MR imaging features of lateral ventricular ependymomas.Materials and Methods: 38 cases of lateral ventricular ependymomas with histologically confirmed were retrospectively reviewed in terms of location,size,pattern of growth,signal intensity,enhancement pattern as well as the presence or absence of cyst on MR imaging.Results: Almost of tumors were iso-or hypointense on T1WI and all of tumors were hyperintense on T2WI.A cystic component was seen in 73.7% of lateral ventricular ependymomas and intratumoral hemorrhage was rare.Almost of tumors were irregular margins.22(57.9%)cases of tumors infiltrated vicinity of brain tissue and 30(78.9%) cases extended to opposite side ventricle or third ventricle.Almost of tumors(89.5%)showed obviously non-uniform enhancement and 4 cases showed slight non-uniform enhancement.Conclusion: Lateral ventricular ependymomas have certain MR features,which are very help to make correct preoperative diagnosis and different diagnosis.
出处
《CT理论与应用研究（中英文）》
2007年第4期51-55,共5页
Computerized Tomography Theory and Applications
作者简介
吕国士(1970-),男,毕业于第一军医大学,博士,解放军251医院影像中心主治医师,主要从事CT、MRI诊断,Tel:13633238521,E-mail:lament-378@163.com.
