胰腺神经内分泌肿瘤的CT和MRI表现  

CT and MRI findings of pancreatic neuroendocrine neoplasm

作　　者：何云飞[1] 罗宴吉[2] 冯仕庭[2] 靳仓正[1] 胡海菁[1] 杜丽云[1] 徐新超[1] 

机构地区：[1]南方医科大学附属南海医院放射科,广东佛山528200 [2]中山大学附属第一医院放射科,广东广州510080

出　　处：《中国介入影像与治疗学》2017年第3期159-163,共5页Chinese Journal of Interventional Imaging and Therapy

基　　金：国家自然科学基金项目(81571750);广东省自然科学基金(2015A030313043;2014A030311018;2014A030310484);广东省科技计划项目(2014A020212125);佛山市医学类科技公关项目(2014AB000572)

摘　　要：目的探讨胰腺神经内分泌肿瘤的影像特征。方法分析43例经手术后病理证实的胰腺神经内分泌肿瘤的CT和MRI资料,并与手术病理结果对照。结果 43个病灶平均大小为(25.00±1.82)mm,23个病灶出现坏死囊变;CT平扫15个病灶呈等密度,28个病灶呈稍低密度;43个病灶T1WI均呈低/稍低信号,27个病灶T2WI呈高/稍高信号,16个病灶T2WI呈等信号;26个病灶见包膜;30个病灶显示清晰轮廓;24个病灶增强扫描动脉期病灶即明显强化,8个呈延迟强化,5个呈向心性强化,6个呈轻度强化。结论胰腺神经内分泌肿瘤形态及CT和MRI动态增强扫描具有特征性表现,影像学检查对诊断其具有重要价值。Objective To demonstrate the imaging characteristics of pancreatic neuroendocrine neoplasm （P-NEN）. Methods The CT and MRI findings of 43 cases of P-NEN confirmed by pathology were analyzed, and compared with pathological results.Results Mean size of 43 lesions in 43 P-NEN patients were （25.00±1.82）mm. Necrosis cystic degeneration were found in 26 lesions. In CT plain scan, 15 lesions were isodense, 28 lesions were hypodense. All of 43 lesions were hypointensity signal on T1WI; 27 lesions were hypointensity signal, 16 cases were isointensity signal on T2WI. Twenty-seven lesions showed envelope; 30 lesions showed clear outline. In enhancement images, 24 lesions were marked enhancement since arteria1 phase; 8 lesions showed delayed enhancement; 5 lesions showed centrality enhancement; 6 lesions showed wild enhancement. Conclusion P-NEN has some characteristics on CT and MRI scanning, imaging can play an important role in diagnosis for P-NEN.

关 键 词：神经内分泌瘤 胰腺 磁共振成像 体层摄影术 X线计算机 

分 类 号：R735.9[医药卫生—肿瘤] R445[医药卫生—临床医学]