脉络丛黄色肉芽肿的常规MRI及DWI表现  

Converntional MRI and DWI manifestations of choroid plexus xanthogranuloma

作　　者：朱红春[1,2] 黄飚[1] 杜中立[2] 陈敏[2] 毛俊[2] 王艳萍[2] 

机构地区：[1]广东省医学科学院广东省人民医院放射科,广州510080 [2]珠海市人民医院暨南大学附属珠海医院放射科,广东519000

出　　处：《放射学实践》2016年第5期393-396,共4页Radiologic Practice

摘　　要：目的:探讨脉络丛黄色肉芽肿的影像学表现。方法:回顾性分析18例诊断为脉络丛黄色肉芽肿患者的影像学资料,主要评价指标包括病灶形态、信号以及DWI表现特点。结果:18例脉络丛黄色肉芽肿患者均为中老年人,年龄60岁以上者17例(94%),病灶均位于侧脑室三角,其中16例为双侧发病,2例为单侧发病。MRI表现为病灶边界清晰,T1WI均呈低信号,T2WI均呈高信号,MRI增强扫描病灶边缘可见轻度强化,中心均无强化。14例(78%)DWI呈高信号。结论:脉络丛黄色肉芽肿主要见于老年人,常位于侧脑室三角区,绝大多数为双侧发病。DWI上病灶多呈高信号,DWI对病变的诊断及鉴别诊断有很大价值。Objective：To investigate the imaging features of choroid plexus xanthogranuloma.Methods：MRI findings of 18 patients with choroid plexus xanthogranuloma were retrospectively analyzed,mainly to evaluate the morphology,signal intensities and DWI finding of lesions.Results：18patients with choroid plexus xanthogranuloma were middle aged and elderly people,older than 60 y of age accounted for 94%（17/18patients）.All lesions were found in lateral ventricular trigone.16 patients had lesions in bilateral ventricles,2patients had unilateral lesion.The MRI features of lesions were well-defined,hypointensity on T1 WI and hyperintensity on T2 WI,mild marginal enhancement after contrast administration,no enhancement could be found in central area of lesion.Hyperintensity was revealed on DWI in 14patients（78%）.Conclusion：Choroid plexus xanthogranuloma was mainly found in senior people,mainly located within lateral ventricular trigone,bilateral lesions were most frequently seen.Hyper-intensity was showed on DWI,which provides a helpful information in the diagnosis and differential diagnosis of the disease.

关 键 词：侧脑室 脉络丛 黄色肉芽肿 磁共振成像 

分 类 号：R741[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学]