胼胝体区脑胶质瘤34例MRI诊断及手术病理对照研究

目的　探讨胼胝体区胶质瘤的MRI表现 ,提高对该类肿瘤的诊断和鉴别诊断能力。方法　对 34例胼胝体区胶质瘤行MR平扫及增强扫描 ,并与手术及病理结果做对照分析。结果　胼胝体胶质瘤表现为胼胝体长T1长T2 异常信号 ,信号强度均匀或不均匀 ,有明显占位效应 ,注射Gd DTPA后增强扫描 ,根据肿瘤病理类型的不同可出现明显强化、轻度强化或不强化。胼胝体区肿瘤侵及双侧或单侧脑叶时 ,可出现“蝴蝶征”或“半蝴蝶征” ,此二种征象是诊断胼胝体区胶质瘤的重要征象。结论　胼胝体区胶质瘤是颅内特殊部位的肿瘤 ,MRI对该类肿瘤的诊断和鉴别诊断具有重要临床价值

MRI diagnosis of cerebral glioma involving corpus callosum and its operational pathology

Objective To investigate the MRI manifestations of cerebral glioma involving corpus callosum,and to enhance the ability to diagnosis and differential diagnosis.Methods Thirty four cases of cerebral glioma involving corpus callosum under went plain and Gd DTPA enhanced MR scans.The MRi findings of these gliomas were compared with operation and pathology.Results Gerebral gliomas involving corpus callosum presented as long T 1 and long T 2 homogeneous or inhomogeneous signal intensity and obvious mass effect.The MRI findings of Gd DTPA enhanced MR scans were obvious enhancement,slight enhancement or no enhancement accouding to different pathological kinds of gliomas."Butterfly signs" and "semi butterfly signs" were the reflections when gliomas of corpus callosum invaded two sides or one side of cerebral hemisphere.These two signs were significant markings in the diagnosis of cerebral gliomas in corpus callosum region.Conclusions Cerebral gliomas involving corpus callosum are intracranial tumors with special location.MRI has significant clinical value in the diagnosis and differential diagnosis of this kinds of tumour.