小脑发育不良性神经节细胞瘤的CT、MRI表现  

CT and MRI Diagnostic of Dysplastic Gangliocytoma of the Cerebellum

作　　者：于培锋[1] 徐文科[1] 夏晓丽[1] 邱绍玲 牟新勇 YU Peifeng;XU Wenke;XIA Xiaoli;QIU Shaoling;MU Xinyong(Department of Radiology,People’s Hospital of Hanting District,Weifang Shandong 261100,China)

机构地区：[1]潍坊市寒亭区人民医院影像科,山东潍坊261100

出　　处：《中国继续医学教育》2021年第14期154-157,共4页China Continuing Medical Education

摘　　要：目的探讨小脑发育不良性神经节细胞瘤(LDD)的CT、MRI表现。方法回顾性分析24例经手术病理证实为LDD的CT、MRI表现,包括肿瘤发生位置、瘤体大小、形态、密度及信号改变,观察病变是否有瘤体周围水肿、肿瘤是否强化以及强化方式等。结果24例LDD病例中,肿瘤位于左侧小脑半球12例,位于右侧小脑半球12例,其中6例病变累及到小脑蚓部。瘤体CT表现为等低混杂密度,MRI表现为呈斜形或纵行排列的条纹状结构,呈“虎纹征”,与正常脑组织对比呈层状等长T1等长T2信号;24例均无明显瘤周水肿;16例增强扫描病灶未见明显强化,8例呈点条状轻度强化。结论探讨LDD的CT、MRI表现,病变区小脑皮层增厚,CT呈等低混杂密度,MRI呈典型的“虎纹征”,病变周围无明显水肿,提高对本病的认识,具有较高的临床价值。Objective To investigate the CT and MRI manifestations of cerebellar dysplastic ganglion cell tumor(LDD).Methods The MRI findings of 24 patients with LDD confirmed by surgery and pathology were retrospectively analyzed,including the location,size,morphology,density and signal strength of the tumor.Meanwhile,peritumor edema,enhancement of the tumor and the mode of enhancement were recorded. Results among the 24 patientswith LDD, the lesions were located in the left or rightcerebellar hemisphere in 12 cases, and the lesions involvedthe superior vermis in 6 cases. The CT findings of thetumor body showed iso-low hybrid density, and the MRIfindings showed an oblique or longitudinal arrangement ofthe strip structure, showing "tiger stripes". Compared withthe normal brain tissue, the tumor presented a layered isolongT1 iso-long T2 signal. There was no obvious peritumoredema in all 24 cases. In 16 cases, no obvious enhancementwas found in the lesions, while in 8 cases, the lesions wereslightly enhanced in the form of dot and strip. ConclusionTo investigate the CT and MRI manifestations of LDD,the cerebellar cortex in the lesion area was thickened, theCT presented iso-low confounding density, and the MRIpresented typical "tiger stripes". There was no obviousedema around the lesion, so it was of high clinical value toimprove the understanding of this disease.

关 键 词：神经节细胞瘤 小脑肿瘤 体层摄影术 X线计算机 磁共振成像 疾病特征 病理学 

分 类 号：R742[医药卫生—神经病学与精神病学]