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时间:2020-06-03
《胰腺神经内分泌肿瘤的MSCT表现.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、腹部影像学ABDoMINALIMAGING—-339——胰腺神经内分泌肿瘤的MSCT表现王静赵延涛赵念博祁克信【摘要】目的:探讨胰腺神经内分泌肿瘤的MSCT表现,旨在提高对其认识。方法:回顾性分析经手术病理证实的14例胰腺神经内分泌肿瘤患者的MSCT影像资料,分别测量平扫、动脉期和门脉期肿瘤及周围正常胰腺组织的CT{i~,计算肿瘤与周围正常胰腺组织双期的绝对强化程度、肿瘤的相对强化程度比值,比较不同临床类型和不同病理级别肿瘤的强化特点。结果:6例肿瘤位于胰头部,8例位于体尾部;6例为实性,8例为囊实性,6例见少许钙化灶;瘤体最大直径o.9~12.2cm(平均4.6±3.5c
2、In);12例边界清楚,l例侵犯脾脏,1例侵犯邻近血管;1例椎体转移;肿瘤平扫呈等密度或略低密度,增强扫描实性部分轻度强化3例,明显强化l1例,囊性部分无强化。功能性胰腺NEN6例均为病理级别1级的实性肿瘤,其体积小,动脉期强化明显高于周围正常胰腺组织;非功能性胰腺NEN8例,其病理级别1~3级均涵盖,均为囊实性肿瘤,体积通常较大,多伴有钙化灶,肿瘤实质部分强化程度表现出随病理级别增高而下降的趋势。结论:不同临床类型和不同病理级别的胰腺神经内分泌肿瘤其表现有所不同,根据其临床和cT表现特点,可提高内分泌肿瘤定.眭诊断准确性。【关键词】胰腺肿瘤;体层摄影术,x线计算机中图分类
3、号:R814.41文献标志码:A文章编号:1006—5741(2014)一04—0339—05MSCTFindingsofNeuroendocrineNeoplasmofthePancreasWANGJing,ZHAOYan—tao,ZHAONian—bo,QIKe—xin【Abstract】Purpose:TodiscussMSCTfindingsofneuroendocrineneoplasm(NEN)ofthepancreas,inordertoimproveitsrecognition.Methods:TheCTfindingsof14caseswithneuroe
4、ndocrineneoplasmofthepancreasprovedbypathologywereretrospectivelyanalyzed,theCTvaluesoflesionandsurroundingnormalpancreatictissueweremeasuredinplainscan,enhancedarterialandportalvenousphase.Dualphaseabsoluteenhancementdegreeofthetumorandthesurroundingnormalpancreatictissue,relativeratiotum
5、orenhancementdegreewerecalculatedandcomparedbetweendifferentclinicaltypesandpathologicalgradesoftumors.Results:Sixtumorslocatedattheheadofthepancreas,8tumorslocatedatthebodyandtailofthepancreas;6casewassolidtumor,theother8tumorswerecomposedofdifferentproportionsofsolidandcysticparts.Sixcas
6、eswerewithsmallcalcificationsinthetumor.Thetumors’longaxisdiametersranged0.9-12.2cm(mean4.6+3.5cm).Twelvecasesshowedwell-definedborders,including1caseofviolationofthespleen.Twocasesshowedobscureboundary,1casewaswithinfringementofadjacentvessels.1casewithvertebralmetastasis.OnplainCTscan,th
7、elesionswereisodensityorslighthypodensityinallcases.Oncontrast—enhancedscan,solidpartwasslightlyenhancedin3cases,significantlyenhancedin11cases,thecysticportionsappearednoenhancement.SixcasesoffunctionalpancreaticNENwithsolidtumorpathologicalgrade1levelwereenh
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