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 Objective To investigate the MRI findings of corpus callosum and to improve the ability of diagnosis and differential diagnosis of such tumors. Methods 34 cases of corpus callosum area gliomas underwent MR plain scan and enhanced scanning, and surgery and pathological results do comparative analysis. Results The corpus callosum tumors showed long T2 long T2 abnormal signal of corpus callosum with uniform or uneven signal intensity and significant space-occupying effect. After Gd DTPA injection, the corpus callosum tumors enhanced scan. According to the different pathological types, obvious enhancement, mild enhancement or Not strong. The corpus callosum area tumor can affect the bilateral or unilateral lobes, “butterfly sign” or “half butterfly sign”, these two signs is an important sign of diagnosis of corpus callosum area glioma. Conclusion The corpus callosum area glioma is a special intracranial tumor, MRI has important clinical value in the diagnosis and differential diagnosis of such tumors