目的 探讨幕上脑实质内室管膜瘤的MRI表现,提高对该病的认识及诊断正确率.方法 回顾性分析2009年—2018年经手术病理证实的幕上脑实质内室管膜瘤8 例,其中男5 例,女3 例,所有病例均行MRI平扫及增强检查,分析病变在MRI图像上的位置、大小、与邻近结构的关系、瘤周水肿及占位效应、MRI平扫及增强的信号特点.结果 该组8 例病变中,囊实性型7 例,完全实质型1 例,所有肿瘤均与侧脑室关系密切,2 例无明显瘤周水肿,4 例有轻度瘤周水肿,2 例重度瘤周水肿,其中5 例见不同时期出血信号,增强扫描实性成分及囊壁均明显强化.结论 幕上脑实质内室管膜瘤影像学诊断较为困难,但MRI表现仍有一定的特征性,对术前诊断有较大的帮助.“,”Objective To explore the MRI features of supratentorial intra-cerebral ependymoma and improve awareness and accuracy of diagnosis. Methods A retrospective analysis was performed based on the MRI data of 8 patients with pathologically confirmed supratentorial intra-cerebral ependymoma, including 5 males and 3 females. All patients were scanned by MRI and enhanced MRI. The following image features of the lesions were evaluated: location, size, relation with adjacent structures, peritumoral edema, mass effect, MRI signal and enhancement pattern. Results In these 8 cases, 7 cases were cystic-solid and 1 case was solid. All lesions were located around the lateral ventricle. In terms of the degree of peritumoral edema, 2 cases were not obvious, 4 were mild and 2 were severe respectively. Besides, signal of hemorrhage was found in 5 cases, with obvious enhancement in both solid and cystic part. Conclusion The radiology diagnosis of supratentorial intra-cerebral ependymoma is difficult, but the MRI manifestations are still characteristic, which is helpful for preoperative diagnosis.