异位支气管源性囊肿的CT与MRI表现及误诊分析  

CT and MRI features and misdiagnosis of ectopic bronchogenic cyst

作　　者：李小双 朱建国[1] 周浩[2] 李海歌[1] LI Xiaoshuang;ZHU Jianguo;ZHOU Hao;LI Haige(Department of Radiology,Second Hospital Affiliated of Nanjing Medical University,Nanjing 210011,China)

机构地区：[1]南京医科大学第二附属医院放射科,江苏南京210011 [2]南京中医药大学附属医院放射科,江苏南京210029

出　　处：《中国中西医结合影像学杂志》2022年第3期255-258,共4页Chinese Imaging Journal of Integrated Traditional and Western Medicine

摘　　要：目的:探讨异位支气管源性囊肿(EBC)的典型CT及MRI表现,并对其误诊情况进行分析,以提高该病术前影像诊断正确率。方法:回顾性分析经病理证实的12例EBC患者的临床及影像学资料。12例均行CT平扫,其中10例加行CT增强扫描;3例行MRI平扫+增强扫描,1例仅行MRI增强扫描。结果:12例均为单发,边界清晰;8例呈类圆形,4例呈葫芦形;8例位于腹膜后,4例位于腹腔内;4例病灶边缘出现钙化。CT平扫4例呈水样密度,8例呈软组织密度;增强扫描9例病灶未见强化,1例病灶动脉期轻微强化。MRI 3例T_(2)WI呈高信号;3例T_(1)WI呈高信号,1例T_(1)WI呈低信号。12例中8例误诊为神经源性肿瘤,1例误诊为淋巴管瘤。结论:EBC虽罕见,但有其典型影像学特征。对发生于腹腔及腹膜后、边界清晰、增强扫描无强化的软组织肿块,应考虑EBC的可能。Objective:To investigate the CT and MRI features of ectopic bronchogenic cyst(EBC),and to analyze its misdiagnosis,so as to improve the accuracy of preoperative imaging diagnosis.Methods:The clinical findings and imaging characters of 12 patients with pathologically confirmed EBC were retrospectively analyzed.All the 12 patients were underwent pre-contrast CT and 10 of them were underwent contrast-enhanced CT.3 patients underwent unenhanced and enhanced MRI at the same time.Results:All the 12 cases were solitary with a sharp edge.8 cases were oval of round,4 cases were gourd-shaped.8 cases were located in the retroperitoneum,4 cases were located in the abdomen.Calcification were observed at the edge of the lesion in 4 cases.In CT scan,4 cases showed fluid attenuation,8 cases showed soft tissue density.Contrast-enhanced CT showed that 1 case with mild enhancement in arterial phase,9 cases without enhancement.3 cases underwent MRI showed high signal on T_(2)WI,3 cases showed high signal on T_(1)WI,1 case showed low signal on T_(1)WI.In 12 cases,8 cases were misdiagnosed by neurogenic tumor,1 case was misdiagnosed by lymphangioma.Conclusions:Although EBC is rare,it still has its typical imaging features.The presence of EBC should be taken into consideration for the soft tissue masses that occurs in retroperitoneum and abdomencavity with clear boundaries and no enhancement.

关 键 词：异位支气管源性囊肿 体层摄影术 X线计算机 磁共振成像 

分 类 号：R734.1[医药卫生—肿瘤]