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1、卵巢性索-间质肿瘤的MR表现李娴1朱来敏2孙新海2翟宁2李美芹2胡喜斌2（1.济宁医学院医学影像系山东济宁272067；2.济宁医学院附属医院磁共振室山东济宁272029）【摘要】目的:探讨卵巢性索-间质肿瘤的MR表现。方法:回顾性分析经手术和病理证实的31例卵巢性索一间质肿瘤的MRI资料。结果:31例性索-间质肿瘤包括卵泡膜细胞瘤9例、卵泡膜-纤维瘤14例，粒层细胞瘤6例，支持-间质细胞瘤2例。卵泡膜细胞瘤、卵泡膜-纤维瘤中，19例（82.61%）为实性，其中76.19%的肿瘤T2WI呈明显低信号，23.81%T2WI呈稍高信号，病灶内均
2、可见斑片状、裂隙状、云絮状高信号影；3例（13.04%）呈囊实性病变，其中2例实性成分T1WI及T2WI均呈低信号；1例T2WI呈等、略高信号；1例（4.35%）为完全囊性病灶，T1WI及T2WI均呈高低混杂信号。4例颗粒细胞瘤，MRI均表现为囊实性肿块，肿瘤内可见大小不等的多囊状改变，囊内可见厚薄不一的分隔，增强扫描囊壁及实性部分均持续明显强化；2例支持-间质细胞瘤，囊实性混杂肿块，T1WI及T2WI均呈高低混杂信号，增强扫描后实性成分及分隔明显强化。结论：卵巢性索间质肿瘤MR表现多样，但各种肿瘤有其特征性表现。关键词：卵巢;性索;肿瘤;
3、磁共振成像中图分类号: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-间质肿瘤
8、（SexCord–StromalTumor，SCST）是一类少见的卵巢肿瘤，占全部卵巢肿瘤的约8%，起源于卵巢基质及原始性腺中的性索细胞，卵巢基质细胞包括纤维母细胞、卵泡膜细胞及
