目的 探讨胼胝体发育不良合并 脂肪瘤的MRI征象。方法 回顾性分析2010 年6月至2016年1月期间于我院诊断的12例 胼胝体发育不良合并脂肪瘤的MRI影像资 料，并对胼胝体发育不良合并脂肪瘤病患 者的MRI影像特征进行总结。结果 胼胝体 发育不良合并脂肪瘤的MRI表现：8例双 侧侧脑室体部平行分离；5例胼胝体全部 或部分缺如；3例因海马发育低下导致侧 室颞角明显扩大；9例纵裂与三室前部相 通；3例合并透明隔缺如。结论 胼胝体发 育不良合并脂肪瘤的MRI的表现具有特征 性，MRI能够准确的确定病变的位置、范 围并做出正确的诊断。

Objective To investigate the MRI imaging characteristics of Corpus callosum complicating lipoma. Methods To retrospectively analyze MRI scan image data of 12 cases of Corpus callosum complicating lipoma from June 2010 to January 2016, and comprehensively analyze the MRI scan characteristics. Results The MRI findings of corpus callosum complicating lipoma were: 8 cases are flattened and separated bodies of both lateral centricle. Five cases are all or part of the corpus callosum agenesis, 3 cases are of low hippocampal development, resulting in significant expansion of the temporal horn side chamber, 9 cases are longitudinal front with three rooms communicated, and 3 cases are combined with septum absence. Conclusion Corpus callosum complicating lipoma has characteristic MRI performance, which is able to precisely determine regions of lesions and make a complement diagnosis.