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1、卵巢性索-間質(zhì)腫瘤的MR表現(xiàn)李嫻1朱來敏2孫新海2翟寧2李美芹2胡喜斌2（1.濟(jì)寧醫(yī)學(xué)院醫(yī)學(xué)影像系山東濟(jì)寧272067；2.濟(jì)寧醫(yī)學(xué)院附屬醫(yī)院磁共振室山東濟(jì)寧272029）【摘要】目的:探討卵巢性索-間質(zhì)腫瘤的MR表現(xiàn)。方法:回顧性分析經(jīng)手術(shù)和病理證實(shí)的31例卵巢性索一間質(zhì)腫瘤的MRI資料。結(jié)果:31例性索-間質(zhì)腫瘤包括卵泡膜細(xì)胞瘤9例、卵泡膜-纖維瘤14例，粒層細(xì)胞瘤6例，支持-間質(zhì)細(xì)胞瘤2例。卵泡膜細(xì)胞瘤、卵泡膜-纖維瘤中，19例（82.61%）為實(shí)性，其中76.19%的腫瘤T2WI呈明顯低信號，23.81%T2WI呈稍高信號，病灶內(nèi)均
2、可見斑片狀、裂隙狀、云絮狀高信號影；3例（13.04%）呈囊實(shí)性病變，其中2例實(shí)性成分T1WI及T2WI均呈低信號；1例T2WI呈等、略高信號；1例（4.35%）為完全囊性病灶，T1WI及T2WI均呈高低混雜信號。4例顆粒細(xì)胞瘤，MRI均表現(xiàn)為囊實(shí)性腫塊，腫瘤內(nèi)可見大小不等的多囊狀改變，囊內(nèi)可見厚薄不一的分隔，增強(qiáng)掃描囊壁及實(shí)性部分均持續(xù)明顯強(qiáng)化；2例支持-間質(zhì)細(xì)胞瘤，囊實(shí)性混雜腫塊，T1WI及T2WI均呈高低混雜信號，增強(qiáng)掃描后實(shí)性成分及分隔明顯強(qiáng)化。結(jié)論：卵巢性索間質(zhì)腫瘤MR表現(xiàn)多樣，但各種腫瘤有其特征性表現(xiàn)。關(guān)鍵詞：卵巢;性索;腫瘤;
3、磁共振成像中圖分類號:R445.2MRIFindingsofSexCord-StromalTumoroftheOvaryLIXian1,ZHULaimin2,SUNXinhai2,ZAINing2,LIMeiqin2,HUXibin21.DepartmentofRadiology,theJiningMedicalCollegeShandongProvince,272067,R.P.Chian2.DepartmentofRadiology,theAffiliatedHospitalofJiningMedicalCollegeShandongP
4、rovince,272029,R.P.Chian【Abstract】Object:Toinvestigatethemagneticresonanceimaging(MRI)characteristicsofovarianSexCord–StromalTumor.Methods:TheMRIfindingsof31casesofSCSTwerereviewedretrospectively.Results:31casesofSCSTwerecomposedof9casesthecacelltumor,14casesfibrothecoma，4
5、casesgranulosacelltumorsand2caseSertoli–Leydigcelltumors.Inthecacelltumorandfibrothecomasolid,19casesweresolid,76.19%casewereverylowsignal,aswellas23.81%appearedslighthighsignalonT2WI,allcasescanseedegenarationinthetumor;3caseweresolidandcysticleision,2caseshowlowsignalonT
6、2WI,1isslightiso-intensetohypointenseonT2WI;1iscompletecystic,whichishetergeneousonbothT1WIandT2WI.Infourovariangranulosacelltumor,thelesionpresentedasmixedcystic-solidmass,aftercontrastadministrationmarkedenhancementofsolidcomponentsintumorwasrevealed.Twosertolileydigcell
7、tumorsalsopresentsmixedcystic-solidmass,aftercontrast,thesolidelementsandseptahaveenhancement.Conclusions:SCSTdemonstratevariableMRImorphologicalappearances，sometypesoftumorhavecharacteristicMRIfeature.【Keywords】:Ovary,SexCord–StromalTumor,Magneticresonanceimaging卵巢性索-間質(zhì)腫瘤
8、（SexCord–StromalTumor，SCST）是一類少見的卵巢腫瘤，占全部卵巢腫瘤的約8%，起源于卵巢基質(zhì)及原始性腺中的性索細(xì)胞，卵巢基質(zhì)細(xì)胞包括纖維母細(xì)胞、卵泡膜細(xì)胞及
