摘要
目的 :探讨自身免疫性胰腺炎(autoimmune pancreatitis,AIP)的MRI特征。方法 :回顾性分析9例AIP患者的MRI资料,分析病变胰腺的形态、MRI信号改变及强化特点,胆总管、胰管改变,以及胰腺周围的MRI表现。结果:9例MRI图像均见胰腺体积增大,6例呈弥漫性肿大,3例局限性肿大;9例均见MRI信号改变,T2WI呈稍高信号,T1WI呈稍低信号,DWI呈高信号,动态增强扫描呈均匀延迟强化;7例胰腺周围可见包膜样结构;MRCP示6例胆总管胰腺段狭窄,呈"鸟嘴状",9例均见胰管节段性狭窄;2例胰腺周围见少量渗出,1例胰腺实质内及胰腺周围可见多发性大小不等的假性囊肿形成。结论:AIP的MRI表现具有特征性,结合临床有助于AIP的正确诊断。
Objective：To investigate the MRI imaging features of autoimmune pancreatitis （AIP）. Methods：The MRI imaging data of 9 cases of AIP were analyzed retrospectively. The morphology of pancreas,signal changes and enhanced features,mani-festation of the common bile duct,pancreatic duct and the surrounding pancreas were analyzed. Results：9 cases appeared pan-creas enlargement,including 6 cases showed diffusely enlargement,3 cases showed segmental enlargement. All cases appeared signal changes,hyperintense at T2WI and DWI and hypointense at T1WI,enhancement on delayed phase. The capsule-like struc-ture around pancreas were seen in 7 cases. MRCP showed the pancreatic segment of common bile duct displayed the appear-ance of “beak like” stenosis in 6 cases,9 cases appeared stenosis of pancreatic duct. 2 cases of patients showed slight leakage around pancreas,1 case can be seen formation of multiple sizes was of intra- and peri- pancreatic pseudocyst. Conclusion：AIP has certain characteristic MRI imaging features,combined with the clinical manifestation is helpful for the diagnosis.
出处
《中国中西医结合影像学杂志》
2015年第4期370-372,共3页
Chinese Imaging Journal of Integrated Traditional and Western Medicine
关键词
胰腺炎
磁共振成像
Pancreatitis
Magnetic resonance imaging
