MRI动态增强扫描鉴别PDAC与非高强化PNET的价值  

Value of MRI Dynamic Contrast-enhanced Scan in the Differential Diagnosis of PDAC and Non-high Enhancement PNET

作　　者：王忠慧 WANG Zhong-hui(MRI Room,Nanyang Central Hospital,Nanyang 473000,Henan Province,China)

机构地区：[1]南阳市中心医院核磁共振室,河南南阳473000

出　　处：《罕少疾病杂志》2022年第11期62-63,共2页Journal of Rare and Uncommon Diseases

摘　　要：目的探讨MRI动态增强扫描鉴别胰腺导管腺癌(PDAC)与非高强化胰腺神经内分泌肿瘤(PNET)的价值。方法回顾性选取2019年3月至2021年3月在本院经病理检查确诊的42例PDAC患者和36例PNET患者,收集两组患者的MRI平扫和动态增强的图像。根据动脉强化程度将PNET病灶分为强化PNET组和非强化PNET组。记录PDAC和非强化PNET的图像分析结果,包括病变的位置,瘤体大小、数量、边缘是否规则以及MRI平扫和动态增强的各期特征表现。结果PDCA共有病灶43个,典型PNET共有病灶22个,非强化PNET共有24个病灶;PDCA与非强化PNET病灶的R(T_(1))和R(T_(2))无差异(P>0.05),R(动)、R(静)、R(延)比较有显著差异(P<0.05)。PDCA与非强化PNET病灶的静脉期、延迟期、边缘、胰周浸润和血管侵犯比较有显著差异(P<0.05)。结论MRI动态增强对鉴别PDCA与非强化PNET病灶有一定的临床价值,且病灶的部位、边缘、有无胰周浸润和血管侵犯都可作为PDCA与非强化PNET病灶鉴别指标。Objective To explore the value of MRI dynamic contrast-enhanced scan in the differential diagnosis of pancreatic ductal adenocarcinoma(PDAC)and non-high enhancement pancreatic neuroendocrine tumors(PNET).Methods A retrospective selection was performed on the 42 patients with PDAC and 36 patients with PNET confirmed by pathological examination in the hospital between March 2019 and March 2021.MRI plain scan and dynamic contrast-enhanced images in both groups were collected.According to the degree of arterial enhancement,PNET lesions were divided into enhanced PNET group and non-enhanced PNET group.The image analysis results of PDAC and non-enhanced PNET were recorded,including lesion sites,size and number of tumors,regular edges,and characteristics of MRI plain scan and dynamic enhancement in each phase.Results There were 43 lesions in PDCA,22 lesions in typical PNET and 24 lesions in non-enhanced PNET.There was no difference in R(T_(1))or R(T_(2))between PDCA and non-enhanced PNET lesions(P>0.05),while there were significant differences in R(movement),R(static)and R(extended)(P<0.05).There were significant differences between PDCA and non-enhanced PNET lesions in venous phase,delayed phase,edges,peripancreatic infiltration and vascular invasion(P<0.05).Conclusion MRI dynamic enhancement is of certain clinical value in the differential diagnosis of PDCA and non-enhanced PNET lesions.The lesions sites,edge,presence or absence of peripancreatic infiltration and vascular invasion can be applied as differential indexes for PDCA and non-enhanced PNET lesions.

关 键 词：磁共振成像 胰腺导管腺癌 胰腺神经内分泌肿瘤 

分 类 号：R735.9[医药卫生—肿瘤] R814.42[医药卫生—临床医学]