脑内节细胞胶质瘤的MRI征象分析  

MRI Characteristics of Cerebral Ganglioglioma

作　　者：张琳[1] 张雪林[1] 张玉忠[1] 马艳[1] 詹传银[1] 侯刚强[1] 

机构地区：[1]南方医科大学附属南方医院影像中心,广东广州510515

出　　处：《实用放射学杂志》2009年第4期472-475,共4页Journal of Practical Radiology

摘　　要：目的分析脑内节细胞胶质瘤的MRI征象特点。方法回顾性分析11例经手术和病理证实的脑内节细胞胶质瘤患者的MRI表现。结果肿瘤位于幕上9例：其中单侧颞叶2例，单侧额叶5例，脑室内1例，另有1例呈弥散性分布，病灶累及多个脑叶；位于幕下2例，均位于单侧小脑半球。11例病例中3例为实性＋囊性型，5例为完全实性型，3例为囊性＋囊壁结节型。肿瘤直径从2～9cm不等。MRI表现有一致性：（1）T1WI囊性部分呈低信号，实性部分呈等或低信号；T2WI囊性部分呈高信号，实性部分呈等或高信号；（2）Gd—DTPA增强扫描实性部分及附壁结节肿瘤轻度或明显强化，囊壁强化或部分不强化。结论MRI检查可以清楚地显示肿瘤的部位、形态、大小及其与周围组织结构的关系，因此对脑内节细胞胶质瘤的诊断及鉴别诊断具有重要的价值，可为临床提供术前信息。Objective To study the MRI characteristics of cerebral ganglioglioma. Methods 11 cases with cerebral ganglioglioma proved pathologically were collected. MRI manifestations of all cerebral gangliogliomas were retrospectively analyzed. Results The lesions localized at supratentorium including tempora in 2, frontal lobe in 5, the lateral ventricle in 1, and diffusive in one. 2 lesions located at cerebellum . The lesions appeared as cystic- parenchyma in 3 cases , parenchyma in 5 cases and cystic with mural nodules in 3 cases. The diameters of turnouts were varied from 2 to 9 cm. MRI features of cerebral ganglioglioma included （1） On T1WI the cystic part was hypointensity and the parenchymal part was isointensity or hypointensity. On T2 WI the cystic part was hyperintensity and the parenchymal part was isointensity or hyperintensity. （ 2） After administration of Gd-DTPA intravenously the parenchymal part and mural nodules showed marked enhancement, and the cystic border showed enhancement or not. Conclusion MRI can display the tumor＇s location, shape, size and the relation with surrounding structures well, and it is valuable for the diagnosis and differentiation of cerebral ganglioglioma.

关 键 词：脑 节细胞胶质瘤 磁共振成像 

分 类 号：R739.41[医药卫生—肿瘤] R445.2[医药卫生—临床医学]