摘要
目的总结含脂肪节细胞神经瘤(FCG)的影像学特征。方法回顾性分析经手术病理证实9例FCG影像学表现,均行CT平扫及增强扫描,其中4例行MRI平扫及增强扫描。结果 9例均为单发,后下纵隔及腹膜后各4例,右侧肾上腺1例。CT平扫表现为边界清楚含脂肪的混杂密度影,CT值约为-120.7～-43.4 HU; 6例局限于肿块的周边,其余呈结节状或片状弥漫性分布。瘤内脂肪组织在T_1WI和T_2WI上呈高信号,压脂相上其信号变为低信号。神经组织在CT平扫上呈软组织密度影,在MRI T_1WI上呈稍低信号,在T_2WI上呈稍高信号; CT增强扫描5例肿块呈明显强化,轻中度强化各2例;在MRI增强扫描上轻度强化3例,明显强化1例。5例腹部肿块CT和(或) MRI三期增强扫描呈渐进性强化特征。结论节细胞神经瘤内脂肪存在是一种少见表现,通过CT值测量和MRI压脂相可明确其内脂肪的存在。了解该种现象,CT和(或) MRI多期增强扫描结合其好发部位可提示FCG诊断。
Objective To summarize the imaging features of fat-containing ganglioneuroma (FCG).Methods The imaging manifestations of 9 cases of FCG confirmed pathologically were reviewed.All cases received unenhanced and enhanced CT scanning,4of whom underwent unenhanced and enhanced MRI scanning.Results The ganglioneuromas were singular in all of the 9 cases,including 4 in the posterior mediastinum,4in the retroperitonium and 1 in the right adrenal gland.They all presented well-defined fat-containing heterogeneous masses on unenhanced CT images,and the CT values of fatty portion ranged from -120.7 to -43.4 HU.The fat was focalized around the mass in 6 cases,and diffused as patches or nodules in the other 3cases.The intratumoral fat was verified by fat-suppressed T1WI and/or T2WI. The neural portions presenting soft-tissue density showed slightly low signals on T1WI and slightly high signals on T2WI,which were slightly (n=5),moderately (n=2),and obviously (n=2)enhanced on enhanced CT,and slightly (n= 3)and obviously (n =1)enhanced on enhanced MRI.All of the abdominal masses presented gradual enhancement on enhanced triphase CT and/or MRI scan.Conclusion Fat rarely occurs in ganglioneuromas.CT measurement and fatsuppression sequence of MRI can confirm its occurrence.CT and/or enhanced MRI scanning of the predilection location help to improve the diagnosis of FCG.
作者
张丽红
李娴
王林省
李宏磊
李磊
ZHANG Lihong;LI Xian;WANG Linsheng;LI Honglei;LI Lei(Medical Imaging Center,First People's Hospital of Jining,Jining 272013,Shandong,China;Medical Imaging Center,Affiliated Hospital of Jining Medical University,Jining 272029,Shandong,China;CT Department,Central Hospital of Zaozhuang Mining Group,Zaozhuang 277000,Shandong,China;Department of Pathology,Affiliated Hospital of Jining Medical University,Jining 272029,Shandong,China)
出处
《山东大学学报（医学版）》
CAS
北大核心
2018年第12期73-78,共6页
Journal of Shandong University:Health Sciences
