大脑半球脑实质室管膜瘤患儿MRI表现与病理的相关性分析

The analysis of correlation between MRI and pathology in pediatric intraparenchymal ependymoma

目的探讨大脑半球脑实质室管膜瘤患儿的MRI表现与病理的相关性。方法对我院诊疗的15例大脑半球脑实质室管膜瘤患儿MRI检查及临床资料进行分析。结果 15例经术后病理证实的大脑半球脑实质室管膜瘤,MRI示8例肿瘤以囊性为主,囊性占位表现为较均匀的长T1、长T2信号,病理类型为II级室管膜瘤。4例肿瘤以实性为主,MRI表现为小均匀长或短Tl、长或短T2信号,病理类型为II级室管膜瘤。3例肿瘤为囊实性,MRI表现为稍长、长T1信号,不均匀长及短T2信号,病理类型为III级间变型事管膜瘤。MRI增强扫描示15例肿瘤均强化,其中6例均匀强化,9例不均匀实性强化,其中7例呈典型的环状强化。结论大脑半球脑实质室管膜瘤的MRI主要表现为囊性或实性,具有一定的特征性,在一定程度上反映相应的病理类型。

Objective To study the relationship of MRI features and pathologic types of children＇s ependymoma in hemisphere brain.Methods MRI manifestation of 15 cases of children＇s ependymoma in hemisphere brain 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 For eight cases,MRI showed uniform long T1,long T2 signal for cystic mass,in which pathological type was class II ependymoma.MRI of four solid tumors cases showed a small uniform long or short T1,long or short T2 signal,in which pathological type was class II ependymoma.MRI of three cases of cystic tumors showed a little longer,long T1 signal,uneven long and short T2 signal,in which pathological type was III ependymoma.Enhanced MRI scan showed that fifth cases of cancer were strengthened,including six cases of homogeneous enhancement,nine cases of inhomogeneous solid strengthened,including seven cases showed typical ring enhancement.Conclusion MRI of children＇s ependymoma in hemisphere brain manifests mainly as cystic or solid.MRI of children＇s ependymoma has characteristic features and is consistent with the pathologic type.