9例腹膜后节细胞神经瘤影像表现并文献复习

The imaging findings of nine retroperitoneal ganglioneuromas and literature review

目的分析腹膜后节细胞神经瘤(GN)的CT及磁共振成像(MRI)影像表现,以提高其诊断的准确性。方法回顾性分析2016年7月至2019年3月该院经手术及病理学确诊的9例腹膜后GN患者的影像学资料。5例患者仅行CT平扫和增强扫描,1例患者仅行MRI平扫和增强扫描,3例患者同时行CT、MRI平扫及增强扫描。结果(1)腹膜后GN CT平扫显示低密度结节或肿块影,MRI T1加权像(T1WI)呈稍低、等信号,T2加权像(T2WI)呈不均匀稍高信号,弥散加权成像(DWI)呈稍高信号,增强后轻度延迟强化;(2)腹膜后GN边界清晰,病灶可沿周围组织器官呈钻缝样、匍匐样生长;(3)邻近大血管可被包绕但无侵犯。结论CT和MRI影像特征有助于提高腹膜后GN术前诊断的准确性,为临床诊断及治疗方案的选择提供更多的信息。

Objective To analyze the CT and magnetic resonance imaging(MRI)features of retroperitoneal ganglioneuroma(GN),and to improve the diagnostic accuracy.Methods The imaging data of nine patients with retroperitoneal GN confirmed by surgery and pathology were retrospectively analyzed.Five patients only underwent CT plain scan and enhanced scan.One patient only underwent an MRI plain scan and enhanced scan.Three patients underwent CT,MRI plain scan and enhanced scan simultaneously.Results(1)Retroperitoneal GN CT plain scan showed low-density nodular or mass image,slightly low and equal signal on MRI T1WI,slightly high signal on T2WI and DWI,slightly delayed enhancement.(2)The boundary of retroperitoneal GN was clear,and the lesion could grow along with the surrounding tissues and organs like drilling seam and creeping.(3)Adjacent large vessels could be wrapped but not be invaded.Conclusion The imaging features of CT and MRI can improve the diagnostic accuracy of retroperitoneal GN and provide more information for clinical diagnosis and treatment options.