摘要
目的探讨脑实质室管膜瘤的MRI与病理的相关性。资料与方法收集术后病理证实的18例脑实质室管膜瘤,术前均行MRI平扫及增强扫描,分析其MRI表现与病理类型的关系。结果以囊性为主的肿瘤10例,均位于幕上,肿瘤囊性部分MRI表现为较均匀长T1、长T2信号,肿瘤实性部分呈等及稍长T1、稍长T2信号,其病理类型为室管膜瘤。以实性为主的肿瘤8例,幕上5例实性肿瘤MRI表现为不均匀长或短T1、长或短T2信号,其病理类型为间变型室管膜瘤;幕下3例实性肿瘤MRI表现为稍长、长T1信号,不均匀长及短T2信号,其中2例为室管膜瘤,1例为间变型室管膜瘤。肿瘤增强扫描:15例呈环形强化,3例肿瘤呈不均匀实性强化。结论多数以囊性为主和实性为主的肿瘤能反映各自的病理类型,其MRI表现各具一定特征。
Purpose To study the relationship of MRI features and pathologic types of intracerebral ependymoma.Materials and Methods MRI manifestation of 18 cases of intracerebral ependymoma confirmed by surgery and pathology were retrospectively analyzed.All patients underwent plain and dynamic contrastenhanced MR scan,and the relationship between MRI manifestations and pathologic types were analyzed.Results 10 cases were cystic ependymoma which located at the supratentorium,the cystic regions with low signal intensity on T1WI and high signal intensity on T2WI,and the solid regions with iso-intensity on both T1WI and T2WI.Pathologic types of these 10 cases were ependymomas.Eight cases were solid tumors.Five of them located at the supratentorium with heterogenous signal intensity on both T1 and T2 weighted images which were confirmed to be anaplastic ependymomas.Three cases of infratentorial solid ependymomas represented long T1 signal and were heterogenous on T2WI.Two of them were ependymomas and one was anaplastic ependymoma.After contrast enhanced,15 cases were peripheral enhancement and three were heterogenous enhancement.Conclusion Most of ependymomas with cystic and solid component have characteristic MRI features and are consistent with the pathologic type.
出处
《中国医学影像学杂志》
CSCD
北大核心
2012年第2期105-108,共4页
Chinese Journal of Medical Imaging
关键词
脑肿瘤
室管膜瘤
磁共振成像
病理学
外科
Brain neoplasms
Ependymoma
Magnetic resonance imaging
Pathology
surgical
作者简介
通讯作者 陈利军Address Correspondence to： CHENLijun E-mail： chenlijtm 123@ 126.com
