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1、#1312#实用放射学杂志2006年11月第22卷第11期JPractRadio,lNov2006,Vo.l22,No.11眼眶淋巴瘤的MR影像特点姚建华,陶晓峰,施增儒,王金林,姜庆军,龚万庆(第二军医大学附属长征医院影像科,上海200003)摘要:目的探讨眼眶淋巴瘤的MR影像特点,以提高其术前诊断准确率。方法回顾性分析8例经手术病理证实的眼眶淋巴瘤的MR影像学表现。结果7例为单侧,1例为双侧;4例位于肌锥外呈铸型;4例累及肌锥内外呈弥漫生长,其中3例累及视神经;8例均起源于泪腺和/或眼睑组织,并均有眼外肌受侵;1例有
2、骨质破坏;平扫信号均匀,6例T1WI呈等信号,2例呈稍高信号,7例T2WI呈稍高信号,1例T2WI呈等信号;8例增强后均呈中等度均匀强化。结论眼眶淋巴瘤的MR影像学特征有助于提高其术前诊断准确率。关键词:眼眶;淋巴瘤;磁共振成像+中图分类号:R739.72;R445.2文献标识码:A文章编号:1002-1671(2006)11-1312-03MRImagingCharacteristicsofOrbitalLymphomaYAOJian-hua,TAOXiao-feng,SHIZeng-ru,WANGJin-lin,JI
3、ANGQing-jun,GONGWan-qing(DepartmentofRadiology,theAffiliatedChangzhengHospital,theSecondMilitaryMedicalUniversity,Shanghai200003,China)Abstract:ObjectiveTostudytheMRfeaturesoforbitallymphomainordertoimprovepreoperativediagnosticaccuracy.MethodsMRmanifestationsin8
4、casesoforbitallymphomaconfirmedbypathologywereretrospectivelyanalyzed.ResultsUnilateralmasseswerefoundin7casesandbilateralmassesin1case.Therewere4casesofextraconalmassesand4casesofintra-andextra-conalmassesinwhich3showedthemassinvolvingtheopticnerve.Allthemassesa
5、risedfromlacrimalglandand/oreyelidtissuesandtheextraocularmus-cleswereinvolvedin8cases.Incomparisonwithextraocularmuscles,thesignalofthelesionswerehomogeneousonbothprecontrastimagesandpostcontrastimages.Thesignalintensityofthelymphomawasisointensityin6patientsonT
6、WI,andtheotherswerehyperintensity.TWI12showedaisointensesignalin1casesandshowedaslighthyperintensesignalin7cases.AftertheadministrationofGd-DTPA,allthelesionsenhancedmoderately.ConclusionTheunderstandingofMRIfeaturesoforbitallymphomaisveryusefulforimprovingpreope
7、rativediagnos-ticaccuray.Keywords:orbit;lymphoma;MRI眼眶原发性恶性淋巴瘤是一种非常少见的结外恶块,其中4例伴有眼球突出;1例表现为双眼红肿、流性淋巴瘤,国外文献报道约占眼眶肿瘤的10%,占全泪,临床以炎性假瘤收住入院。[1]部恶性淋巴瘤的百分比<1%,该病影像学报道较1.2磁共振检查方法所有病例术前均行MR平扫少。为了提高影像科医生对本病的认识,及其术前诊及增强扫描,采用GEsignaHD1.5TMR,8NV-头颈断准确率,现将本院收集的眼眶淋巴瘤MR表现做一联合相控阵
8、线圈/SIEMENSVisionPlus1.5TMR,正交总结分析。头线圈,常规行横断T1WI、T2WI、冠状T2WI和矢状脂肪抑制T2WI,增强扫描,常规使用横断、冠状、矢状脂1材料与方法肪抑制T1WI,其中2例行动态增强扫描。扫描1.1病例资料搜集第二军医大学附属长征医院参数:矩阵288@224,T1WITR30
