颅内罕见部位节细胞胶质瘤的影像学表现  

Imaging feature of intracranial gangliogliomas in rare regions

作　　者：乔桂荣[1] 杨吉鹏[2] 江巍[3] 李琛[2] 马永刚 姜涛 孙晓枫[2] QIAO Guirong;YANG Jipeng;J IANG Wei;LI Chen;MA Yonggang;JIANG Tao;SUN Xiaofeng(Department of Radiology,the Second Hospital of Hebei Medical University,Shijiazhuang 050000,China;Department of Neurosurgery,the Second Hospital of Hebei Medical University,Shijiazhuang 050000,China;Department of Pathology,the Second Hospital of Hebei Medical University,Shijiazhuang 050000,China)

机构地区：[1]河北医科大学第二医院影像放射科,河北石家庄050000 [2]河北医科大学第二医院神经外科,河北石家庄050000 [3]河北医科大学第二医院病理科,河北石家庄050000

出　　处：《实用放射学杂志》2020年第9期1374-1377,共4页Journal of Practical Radiology

摘　　要：目的探讨颅内罕见部位节细胞胶质瘤(GG)的影像学特征,进一步提高对GG的认识及影像学诊断水平.方法回顾性分析8例颅内罕见部位GG患者的影像资料、病理结果和临床资料.结果GG位于松果体区2例,小脑2例,第四脑室1例,胼胝体1例,侧脑室1例,桥小脑角区1例;8例肿瘤中实质性肿瘤5例,囊实性肿瘤3例;瘤内钙化2例,出血1例;MRI检查实质性肿瘤或囊实性肿瘤实质部分T1WI呈稍低或低信号,T2WI呈稍高或高信号,强化MRI检查4例实质性肿瘤无强化,1例呈不均匀轻中度强化,2例囊实性肿瘤实质部分呈轻中度强化.MRI检查可见瘤周脑皮质明显增厚1例.结论颅内罕见部位GG中实质性肿瘤相对多见,小脑及松果体区是除大脑半球以外GG的主要发生部位;实质性GG增强MRI扫描可不强化,不强化的实质性GG多为WHOⅠ级;GG钙化较常见,瘤周脑皮质局部增厚可为GG一种特征性表现.Objective To investigate the imaging features of intracranial gangliogliomas(GG)in rare regions,to improve the understanding and the imaging diagnosis level of GG.Methods Imaging data,pathological results and clinical data of 8 patients with intracranial GG in rare regions were analyzed retrospectively.Results The GG were located in the pineal region in 2 cases,the cerebellum in 2 cases,the fourth ventricle in 1 case,the corpus callosum in 1 case,the lateral ventricle in 1 case,the cerebellopontine angle region in 1 case.Among the 8 tumors,5 cases were solid tumors and 3 cases were cystic-solid mixed tumors.Calcification was present in 2 cases and hemorrhage occurred in 1 case.The solid tumors and solid part of cystic-solid tumors appeared hypointense or slightly hypointense on T1WI,hyperintense or slightly hyperintense on T2WI.On enhanced MRI,no enhancement was seen in 4 solid tumors.Mild to moderate enhancement was seen in 1 solid tumor.The solid parts of 2 cystic-solid mixed tumors were enhanced slightly to moderately.MRI showed thickening of the cerebral cortex around tumor in 1 case.Conclusion Solid tumor is relatively common in intracranial GG of rare regions.The cerebellum and pineal region are the main location where GG develop besides cerebral hemisphere.Some solid GG show no enhancement and the solid GG with no enhancement are highly likely to be of WHO grade Ⅰ.GG calcification is common,Thickening of the local cerebral cortex around the mass could be considered to be an important imaging feature of GG.

关 键 词：节细胞胶质瘤 磁共振成像 中枢神经系统 

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