欢迎来到天天文库
浏览记录
ID:41166861
大小:491.03 KB
页数:6页
时间:2019-08-18
《肾嗜酸细胞瘤的影像学诊断》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、万方数据丛盟学实践2008年3月第23卷第3期RadiolPractice,Mar2008,Vol23,No.S肾嗜酸细胞瘤的影像学诊断毕文杰,ManavendraUpadhyaya,刘玉,邵丹丹,李卫侠,谢洁林,陈克敏●293腹部影像学【摘要】目的:探讨肾嗜酸细胞瘤(R0)的影像学表现,以提高对其诊断的准确性。方法:回顾性分析经病理证实的12例R0患者的影像资料。12例均行MSCT平扫及多期增强扫描,包括肾皮质期、髓质期和排泄期(5例)增强扫描;有3例同时行MRI检查。结果:CT平扫示12例病灶均为单发,7例位于左肾,5
2、例位于右肾,最大径2.0~11.6cm,平均5.8cm,<3.0cm者3例。增强扫描:肾皮质期示10例病灶明显强化,其中8例强化低于肾皮质,2例强化接近于肾皮质}肾髓质期示7例病灶强化程度下降并低于肾脏髓质的密度,3例病灶持续强化、于排泄期见密度开始下降,2例病灶在皮质期~排泄期表现为持续强化;6例痛灶内可见星芒样瘢痕,8例有完整包膜,3例可见钙化。3例病灶于MRIT-wI上呈等、低信号,T:WI呈相对均匀的高信号,3例均见完整包膜。结论:RO的影像学表现有一定特征性,多表现为增强后均匀强化,无囊变或坏死,T:wI上可见完
3、整的低信号包膜,有助于同各类型肾癌鉴别。【关键词】肾肿瘤;体层摄影术,X线计算机;磁共振成像【中图分类号1R445.2;R814.42;R737.1【文献标识码】A【文章编号】1000—0313(2008)03一0293一04ImagingDiagnosisofRenalOncocytomaBIWen-jie,ManavendraUpadhyaya,LIUYu,eta1.DepartmentofRadiology,Rui—jinHospital,ShanghaiJiaotongUniversity,Shanghai2000
4、25,P.R.China[Abstract]0bjective:Tostudytheimagingfeaturesofrenaloncocytoma(R0)andtoimprovethediagnosticaccura—cy.Methods:Theimagingfeaturesof12pathologyprovedROswerereviewedretrospectively.AllpatientsunderwentMSCTincludingpre-contrastaswellaspost—contrast(cortico-
5、medullaryphase,parenchymalphase)scanning,fivepatientshadex-cretoryphaseadditionally.ThreepatientshadMRexamination.Results:OnplainCTimages,allpatientshadsolitarylesion,thelocationofROwereinleftkidney(n一7)andrightkidney(n=5).Themaximumdimensionoflesionrangedfrom2.O~
6、11.6cm(average5.8cm),three1esionswerelessthan3.0cm.Tanlesionsshowedobviousenhancementonthecorti-co-medullaryphase,theattenuationineightofwhichwerelowerthantheadjacentrenalcortex,twolesionsshowediso-at—tenuatedwhencomparedwithrenalcortex.Ontheparenchymalphase,seven
7、lesionsbecamehypo-attenuatedwhencom—paredwithrenalmedullaandthreelesionsshowedcontinuousenhancementbuttheattenuationdeclinedattheexcretoryphase.Twolesionsenhancedcontinuouslyfromthecortico-medullaryphasetOtheexcretoryphase.Centralstellatescarwasfoundinsixlesionsan
8、dcompletepsudocapsulewasobservedineight,calcificationwasobservedinthreelesions.OfthethreelesionsunderwentMRexamination,whichshowediso-/hypo-intensityonT
此文档下载收益归作者所有