摘要
目的:本文回顾性分析15例脑内节细胞肿瘤的CT和(或)MRI表现,与病理对照探讨其影像学特点。材料和方法:15例经手术治疗并获得病理诊断的病例均有完整的MRI资料,其中8例同时有CT检查资料。CT为头颅平扫,MR为SE序列T1W、FSET2W和增强后SET1W扫描。结果:幕上10例病灶,幕下5例病灶。CT平扫病灶主要表现为等、低密度,其中4例伴有高密度钙化。MRI平扫14例T1WI为等和(或)低信号,仅1例节细胞胶质母细胞瘤表现为高低混杂信号。T2WI主要表现为高信号或伴等、低信号区。增强后T1WI:节细胞胶质瘤(1级),2例无强化;节细胞胶质瘤(2～4级),3例轻度斑片状强化,7例显著不均匀强化;节细胞瘤(1级),2例均表现为显著不均匀强化;1例小脑发育不良性节细胞瘤无强化。其中3种类型病灶较特殊。结论:年轻患者,脑内占位病灶实质部分位于皮质区,无强化或显著不均匀强化,尤其当病灶合并有囊变和钙化时,鉴别诊断应包括节细胞肿瘤。部分节细胞肿瘤表现特殊可供诊断之参考。
Purpose： We present 15 cases of ganglion cell tumors, analyze their CT and / or MRI features, with the intent of identifying their imaging features. Materials and Methods： 8 CT and 15 MR examinations in 15 patients with ganglion cell tumors who had undergone resection were reviewed. Both plain CT scan and SE T1W, FSE T2W, postcontrasted T1W SE sequences MR scan were performed on 8 patients, and the other 7 patients only got MR scan. Comparison between findings at CT, MRI and pathologic examination was made. Results： On plain CT scan, 2 were hypodensity with peripheral calcification, the others were Iso - or hypodensity with 2 calcification. On T1W MRI： 14 were Iso - and/ or hypointensity, only one ganglioglioma（Grade 4） with hemorrhage was hypo- and hyperintensity, on T2WI： 2 showed hyperintensity with hypointnesity ring, 12 hyper - or with hypointensity, and one dysplastic gangliocytomas of the cerebellum was hyperintensity with strait isointensity morphology. 7 were of no edema, 3 mild edema, and 5 medium edema. On post- contrasted T1WI, 2 ganglioglioma（Gradel）： both cases were not enhanced, 10 ganglioglioma（Grade 2 - 4） ： 3 were slightly patchy enhanced and 7 Intense heterogenous enhanced. 2 gangliocytoma（Gradel） were intense heterogenous enhanced, 1 dysplastic gangliocytomas of the cerebellum was not enhanced. Three types of these lesions were special including： 2 gangliogliomas （Gradel） which are cystic lesion circled with calcification ring with no enhancement, 3 cases of ganglion cell tumors locating within penduncle, pons, medulla and superior cervical spinal cord, 1 case of dysplastic gangliocytoma of the cerebellum. Conclusion： An intra-axial tumor of young patient located on the gray matter, with no enhancement or intense heterogenous enhancement, especially with cysts and calcification, differential diagnosis of ganglion cell tumor should be concerned. Some ganglion cell tumors are of special imaging features for diagnosis.
出处
《中国医学计算机成像杂志》
CSCD
2006年第1期1-5,共5页
Chinese Computed Medical Imaging
关键词
节细胞
肿瘤
CT
磁共振成像
病理
Ganglion cell Tumor CT Magnetic resonance imaging Pathology
