颅内表皮样囊肿的MRI表现  

MR Imaging Study of Intracranial Epidermoid Cyst

作　　者：陈瑞科 杨素云[1] 郭兴伦[1] 

机构地区：[1]山东省单县中心医院CT/MR室,山东单县274300

出　　处：《实用放射学杂志》2004年第5期410-412,共3页Journal of Practical Radiology

摘　　要：目的　分析颅内表皮样囊肿的MRI影像学表现。方法　证实的 18例患者中 ,男 7例 ,女 11例 ,全部行MRI检查。结果　典型表现者 16例 ,占 88.9% ,T1WI表现为低信号 ,T2 WI表现为高信号 ;不典型表现者 2例 ,占 11.1% ,T1WI表现为欠均匀高信号 ,T2 WI表现为高信号。增强扫描 ,16例肿瘤不强化 ,2例边缘强化。结论　典型表皮样囊肿是T1WI呈低信号 ,且欠均质 ;非典型表皮样囊肿T1WI呈高信号 ,应注意此类肿瘤的鉴别诊断。Objective To study the MR imaging features of intracranial epidermal cyst.Methods 18 cases(include 7 male,11 female) epidermal cyst pathology confirmed were analysed.Results The epidermal cyst usually exhibited heterogeneously low signal intensity on T 1WI(88.9%),and only 2 patients showed high signal intensity on T 1WI(11.1%).After contrast medium enhancement 16 cases had no obvious enhancement,only 2 patients had rim light enhancement .Conclusion Typical epidermal cyst commonly show heterogenously low signal intensity on T 1WI. A typcal epidermal cyst has high signal intensity on T 1WI.Differential diagnosis shoud be consider on these kind of epidermal cyst.

关 键 词：颅内表皮样囊肿 MRI表现 磁共振成像 诊断 增强扫描 

分 类 号：R739.41[医药卫生—肿瘤] R730.4[医药卫生—临床医学]