脑节细胞胶质瘤MRI表现与临床病理联系  

MRI findings of ganglioglioma with correlation of clinical and pathological analysis

作　　者：李峰[1] 贾传海[2] 朱宗明[1] 张龙江[1] 徐艳[1] 朱建国[1] 

机构地区：[1]南京军区南京总医院影像科,江苏南京210002 [2]江苏省常熟市第二人民医院影像科,江苏常熟215500

出　　处：《中国临床医学影像杂志》2010年第1期1-4,共4页Journal of China Clinic Medical Imaging

摘　　要：目的:探讨脑节细胞胶质瘤的MRI与临床病理的特点。方法:回顾分析20例脑节细胞胶质瘤的MRI和临床病理特点。结果:病灶全部为单发,幕上18例,幕下2例。额叶8例,颞叶7例,顶叶、枕顶叶、额颞叶及小脑、延颈髓各1例。17例为术前检出肿瘤,3例为术后检出肿瘤,其中2例为原发灶复发,1例为非原发灶部位新发肿瘤。MRI上肿瘤信号呈多样性,根据MRI表现可分囊性为主型和实性为主型,增强后,肿瘤强化呈多样性,囊性为主型可无强化或伴壁结节强化,实性为主型可局灶强化、弥漫强化。瘤周水肿多较轻或无。脑电联合同步功能磁共振成像结果显示,最大激活区与病理灶位置一致。结论:脑节细胞胶质瘤的MRI表现具有一定特征性,结合应用脑电联合同步功能磁共振成像有助于临床术前评价。Objective：To analyze MRI features of gangliogliomas with correlations of clinical and pathological findings.Methods：MR imaging,clinical and pathological features of gangliogliomas in 20 cases were analyzed retrospectively.Results：All cases were solitary.Eighteen lesions were supratentorial,2 lesions were subtentorial.Amomg them,8 lesions located in the frontal lobe,7 lesions in temporal lobe,1 lesion in the parietal lobe,occipital-parietal lobe,frontal-temperal lobe cerebella and medulla-cervical cord in each.Seventeen lesions were detected preoperatively MRI,3 recurrence tumors detected postoperatively.The MR imaging appearance of gangliogliomas is variable.Gangliogliomas may be divided into solid tumors and cystic tumors on the basis of their MR characteristics.On enhanced MRI,cystic tumors may be nonenhancing or appear as a cystic lesion with an enhancing mural nodule,the focal or diffuse enhancement can be seen in the solid tumors.No or mild perilesional edema were seen for most tumors.The activation detected by EEG-fMRI was concordant with pathological focus.Conclusion：The MRI of gangliogliomas has some characteristic imaging features.It is helpful for the evaluation of gangliogliomas preoperatively combining with EEG-fMRI.

关 键 词：神经节神经胶质瘤 脑肿瘤 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]