成人颅脑MRI检查偶然发现的Tornwaldt囊肿的影像学特点(附275例分析)  

Imaging Features of Tornwaldt Cysts Accidentally Found by Adult Brain MRI(An Analysis of 275 Cases)

作　　者：刘蓓[1] 丁长青[2] 宋峰 孙惠芳[2] LIU Bei;DING Chang-qing;SONG Feng;SUN Hui-fang(Department of Otolaryngology,Fengxian People's Hospital of Jiangsu Province,Fengxian,Jiangsu Province,221700 China;Department of Imaging,Fengxian People's Hospital of Jiangsu Province,Fengxian,Jiangsu Province,221700 China)

机构地区：[1]江苏省丰县人民医院耳鼻喉科,江苏丰县221700 [2]江苏省丰县人民医院影像科,江苏丰县221700

出　　处：《中外医疗》2020年第5期170-173,共4页China & Foreign Medical Treatment

基　　金：2014年江苏省卫生厅医学科研立项课题(YG201419)

摘　　要：目的分析成人颅脑MRI检查时偶然发现的Tornwaldt囊肿影像学表现特点。方法回顾性分析2014年10月-2018年9月在丰县人民医院行有效颅脑MRI检查的24 860例影像学资料。所有患者均行轴位T1WI、T2WI、FLAIR、DWI及矢状位T2WI序列扫描,观察Tornwaldt囊肿的位置、形态及诸序列信号特点。结果该组成人颅脑MRI检查Tornwaldt囊肿的检出率为1.1%(275/24 860)。MRI所有序列均可显示囊肿,以轴位T2WI显示最佳。病灶位于鼻咽顶后部的两侧头长肌之间,可位于正中(n=251)或左旁(n=13)或右旁(n=11),呈边界清晰的(类)圆形(n=232)或椭圆形(n=43)的囊性病灶,18例伴分隔,T1WI多呈低信号(n=252)、等信号(n=15)或高信号(n=8),T2WI及FLAIR呈略低信号(n=5)、等信号(n=8)或高信号(n=262),DWI呈等信号(n=12)或高信号(n=263)。12例行MRI增强,8例病灶未见强化,4例囊壁轻微强化。结论 Tornwaldt囊肿具有典型的鼻咽顶部中线区域发病部位及MRI囊性病灶特点,易于为颅脑MRI检出。Objective To analyze the imaging characteristics of Tonwaldt cysts accidentally discovered in adult available brain MRI examination. Methods The imaging data of 24 860 cases with effective craniocerebral MRI in Fengxian people’s hospital from October 2014 to September 2018 were retrospectively analyzed. All patients underwent axial T1WI, T2WI,FLAIR, DWI and sagittal T2WI sequence scanning to observe the location, morphology and signal characteristics of Tornwaldt cyst. Results The detection rate of Tornwaldt’s cyst in brain MRI was 1.1%(275/24 860). The cysts could be showed in all the MRI sequences, and axial T2WI showed the best. The cysts were located in the nasopharyngeal apex posterior part and between the bilateral long cephalic muscles. The cysts were seen in the midline of the nasopharynx in251 cases, at left lateral nasopharynx in 13 cases and at right lateral nasopharynx in 11 cases. The cysts were round(n=232) or elliptical(n=43) with clear boundaries, 18 lesions were with separation. The cysts presented as low signal(n=252),medium signal(n=15) or high signal(n=8) one T1WI, slightly low signal(n=5), medium signal(n=8) or high signal(n=262)on T2 WI and FLAIR and slightly low signal(n=12) or high signal(n=263) on DWI. 8 cysts were no enhancement and 4 cysts were slight enhancement in the cystic wall in the 9 patients who underwent enhanced MR. Conclusion Tornwaldt’s cyst has a typical feature of nasopharyngeal top midline area and cystic signal on MRI, which is easy to be detected by craniocerebral MRI.

关 键 词：鼻咽 囊肿 TORNWALDT囊肿 颅脑 磁共振成像 

分 类 号：R445[医药卫生—影像医学与核医学]