颅内白色表皮样囊肿的CT、MRI表现及分析  

CT and MRI characteristics and analysis of intracranial white epidermoid cysts

作　　者：李鑫 李远 柴家荣 孟嫦娟 王彦平 赵利阳 杨志宏 LI Xin;LI Yuan;CHAI Jiarong;MENG Changjuan;WANG Yanping;ZHAO Liyang;YANG Zhihong(Department of Radiology,Xingtai Central Hospital,Xingtai,Hebei Province 054000,China;Department of Pathology,Xingtai Central Hospital,Xingtai,Hebei Province 054000,China)

机构地区：[1]邢台市中心医院影像科,河北邢台054000 [2]邢台市中心医院病理科,河北邢台054000

出　　处：《实用放射学杂志》2025年第1期18-21,共4页Journal of Practical Radiology

摘　　要：目的探讨颅内白色表皮样囊肿(WECs)的影像学特征。方法回顾性分析7例经病理证实为WECs患者的CT、MRI表现,7例均行CT平扫和MRI平扫,6例行MRI增强扫描。结果7例均为单发,位于右侧颅中窝2例,鞍上区2例,左侧桥小脑角区1例,右侧小脑蚓部1例,小脑延髓池1例。病变呈椭圆形或不规则形,边界清晰,无灶周水肿。7例CT以高密度为主,1例伴钙化。7例在T_(1)WI上大部分呈高信号,局部信号混杂;6例T_(2)WI、液体衰减反转恢复(FLAIR)以低信号为主,1例以高信号为主;7例扩散加权成像(DWI)呈低信号。1例边缘呈“卷发”样,1例表现为“漩涡”状。5例无强化,1例边缘轻度强化。结论颅内WECs有一定的影像学特征,当发现CT呈高密度、T_(1)WI以高信号为主、多数无强化的囊性病变时,要考虑WECs的可能。Objective To investigate the radiological features of intracranial white epidermoid cysts(WECs).Methods A retrospective analysis was conducted on the CT and MRI findings of 7 patients pathologically confirmed with WECs.All patients underwent plain CT and MRI scans,and six patients underwent enhanced MRI scans.Results All cases were solitary lesions,located in the right middle cranial fossa(2 cases),suprasellar area(2 cases),left cerebellopontine angle(1 case),right cerebellar vermis(1 case),and cerebellomedullary cistern(1 case),respectively.The lesions appeared oval or irregular in shape with clear boundaries and no perilesional edema.The CT scans predominantly showed high density in 7 cases,with calcification in 1 case.On T_(1)WI,7 cases exhibited high signal with mixed signals in some areas;6 cases showed primarily low signal on T_(2)WI and fluid attenuated inversion recovery(FLAIR),with 1 case predominantly showed high signal;all 7 cases demonstrated low signal on diffusion weighted imaging(DWI).The margins of 1 lesion appeared“curly”,and another exhibited a“swirl”pattern.5 cases had no enhancement,while 1 case had mild marginal enhancement.Conclusion Intracranial WECs has certain imaging characteristics.When a cystic lesion shows high density on CT,predominantly high signal on T_(1)WI,and mostly no enhancement,considering the possibility of WECs.

关 键 词：表皮样囊肿 白色表皮样囊肿 磁共振成像 计算机体层成像 

分 类 号：R742[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学] R814.42