颅内皮样囊肿和表皮样囊肿的MRI鉴别诊断  

Intracranial dermoid cyst and epidermoid cyst MRI differential diagnosis

作　　者：谢雷[1] 符伟平 何以郎 徐梓榕[1] 张春霞[1] 

机构地区：[1]广东省肇庆市第二人民医院放射科,广东肇庆526000

出　　处：《中国医药导报》2011年第14期96-97,共2页China Medical Herald

摘　　要：目的:探讨颅内皮样囊肿及表皮样囊肿的MRI表现及其诊断价值。方法:回顾性分析5例经手术病理证实的颅内皮样囊肿和7例颅内表皮样囊肿病例,对其MRI表现、病理和临床特征进行分析。其中8例行MRI增强扫描。结果:5例颅内皮样囊肿病例中,3例表现为T1WI低信号,T2WI为高信号,2例T1WI及T2WI均为不均匀高信号。增强扫描的3例均表现为厚壁中等强化。7例颅内表皮样囊肿病例中,4例表现为T1WI低信号,T2WI高信号,2例T1WI及T2WI均为高信号,1例T1WI及T2WI均为不均匀高信号。增强扫描的5例中4例表现为薄壁轻微强化,1例壁无强化。结论:颅内皮样囊肿和表皮样囊肿均有较典型的MRI表现,可实现术前正确诊断,MRI鉴别诊断意义重大。Objective： To investigate intracranial dermoid cyst and epidermoid cyst of the performance and diagnostic value of MRI. Methods： Retrospective analysis of 5 cases of pathologically proved intracranial dermoid cysts, and 7 cases of in tracranial epidermoid cyst, its MRI, pathological and clinical features into the analysis. 8 cases in which enhanced MRI scan. Results： 5 patients with intracranial dermoid cyst, 3 cases showed low signal in T1WI, T2WI are high signals, 2 cases showed both T1WI and heterogeneous high signal on T2WI. 3 cases were enhanced scan showed thick walled medium en hancement. 7 cases of intracranial epidermoid cyst, 4 cases showed low signal in TIWI, T2WI high signal, and 2 cases showed high signal on both T1WI and T2WI, 1 T1WI and T2WI showed high signal are uneven, Enhanced scan in 5 pa tients, 4 cases showed slight enhancement wall, 1 wall no enhancement. Conclusion： Intracranial dermoid cysts and epi- dermoid cyst show a more typical MRI, the correct preoperative diagnosis can be achieved, MRI differential diagnosis is of great significance.

关 键 词：颅内皮样囊肿 颅内表皮样囊肿 磁共振成像 鉴别诊断 

分 类 号：R445.5[医药卫生—影像医学与核医学]