摘要
目的:分析幕上脑实质室管膜瘤CT和MR表现,旨在提高脑实质内不典型的室管膜瘤诊断的准确率。材料与方法:回顾分析15例经手术病理证实的幕上脑实质室管膜瘤,均行CT和MR检查:男9例,女6例;10岁以下2例,11~20岁2例,30岁以上11例。结果:幕上脑实质室管膜瘤好发于颞顶枕交界部位,多靠脑表面一侧生长,与脑室关系密切,囊变率较高,肿瘤实质常可见条状或点状钙化,MR增强扫描常可见血管影。瘤周一般有轻度水肿或无水肿,增强扫描多可见明显不均匀强化。结论:肿瘤实质内出现条索状血管影,也是幕上脑实质室管膜瘤的特征性表现。提高对幕上脑实质室管膜瘤CT和MR表现的认识,有助于术前定性诊断。
Abstract
Objective: To analyse the CT and MRI features of supratentorial intraparenchymal ependymoma and to improve the diagnostic accuracy of atypical supratentorial intraparenchymal ependymoma. Materials and Methods: The CT and MR images of 15 cases with supratentorial intraparenchymal ependymoma confirmed by postoperative pathology were analyzed retrospectively. Among the 15 cases, 9 were male and 6 female. Two cases were under 10 years old, 2 cases were 11~20 years old, and 11 over 30 years old. Results: Supratentorial intraparenchymal ependymoma frequently involves the boundary sites of parietal lobe, temporal lobe and occipital lobe. At most, its growth closed to the brain surface, and in the affinity of the supratentorial ventricles, and the occurance of cystic changes were usually high. After administration of contrast medium, vasculature were found in the solid parts of the tumor. Peritumoral edema was absent or slight. The tumor was demonstrated slightly hyperdense with marked inhomogeneous enhancement after administration of contrast medium. Conclusion: The finding of vascular image in the solid parts of tumor was also the characteristic of supratentorial intraparenchymal ependymoma. Identifying the manifestation of supratentorial intraparenchymal ependymoma in CT and MRI was helpful in correct preoperative diagnosis of supratentorial intraparenchymal ependymoma.
关键词
室管膜瘤 /
磁共振成像 /
体层摄影术 /
X线计算机
Key words
ependymoma /
magnetic resonance imaging /
tomography /
X-ray computed
吴 越;张雪林;杨本强;关长群;刘文源.
幕上脑实质室管膜瘤15例CT和MRI分析[J]. 中国临床医学影像杂志. 2006, 17(9): 481-483
WU Yue;ZHANG Xue-lin;YANG Ben-qiang;GUAN Chang-qun;LIU Wen-yuan.
CT and MR features of supratentorial intraparenchymal ependymoma(analysis of 15 cases)[J]. Journal of China Clinic Medical Imaging. 2006, 17(9): 481-483
中图分类号：
R739.41
R445.2
R814.42
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