摘要
目的:探讨胼胝体胶质细胞瘤的MRI表现,提高对胼胝体胶质细胞瘤的认识。方法:对2 4例胼胝体胶质细胞瘤的MRI资料进行回顾性分析,并与病理结果作对照。结果:胼胝体胶质细胞瘤累及嘴、膝部15例,体部6例,压部3例。病理类型为星形细胞瘤18例,少支胶质细胞瘤4例,脑神经胶质瘤病2例。MRI表现为T1WI低信号、T2 WI高信号,信号均匀或不均匀,伴有水肿及占位效应,Ⅲ～Ⅳ级肿瘤多伴有坏死、囊变和出血,增强扫描根据肿瘤病理类型的不同可出现不同程度的强化。少支胶质细胞瘤伴斑片状钙化为其特征,脑神经胶质瘤病表现为多部位侵犯。胼胝体胶质细胞瘤可侵犯两侧或一侧大脑半球,形成“蝴蝶征”或“半蝴蝶征”,此二种征象有助于定位诊断。结论:胼胝体胶质细胞瘤是颅内特殊部位的肿瘤,MRI对其诊断具有重要临床价值。
Objective:To investigate MRI manifestations and to improve the knowledge of corpus callosum glioma.Methods:We reviewed 24 cases of corpus callosum glioma underwent plain and enhanced of MRI scans. These MRI findings of gliomas were compared with pathology.Results:These tumors' location involving corpus callosum were rostrum and genu(n=15),body(trunk)(n=6),splenium(n=3).Corpus callosum glioma classified as astrocytoma(n=18), oligodendroglioma(n=4), cerebral gliomatosis(n=2).Corpus callosum glioma presented as homogeneous or inhomogeneous long T_1 and long T_2 signal intensity on MRI, companying with cystic or hemorrhage presentation in Ⅲ～Ⅳ grade glioma and obvious edema and mass effect. These tumors were slight, moderate or obvious enhancement according to different pathological kinds of gliomas.Oligodendroglioma was characterized by cluster-like calcification and cerebral gliomatosis had multiple masses involving both corpus callosum and cerebral hemisphere.“butterfly signs' and “semi-butterfly signs' were the reflections when gliomas of corpus callosum invaded two or one side of cerebral hemisphere. These two signs were significant markings in the diagnosis of cerebral gliomas in corpus callosum region.Conclusion:Cerebral gliomas involving corpus callosum are intracranial tumors with special location. MRI has significant clinical value in the diagnosis of this kind tumors.
出处
《医学影像学杂志》
2005年第6期507-510,共4页
Journal of Medical Imaging
关键词
胼胝体
胶质细胞瘤
磁共振成像
诊断
Corpus callosum
Gliomas
Magnetic resonance imaging
Diagnosis
