多层螺旋CT在阑尾粘液性囊肿诊断中的应用价值熊建国杜勇信阳市中心医院影像科河南省信阳市464000摘要:目的探讨多层螺旋CT对阑尾粘液性囊肿的诊断方法及临床价值。方法回顾性分析2007年5月至2014年6月我院经多层螺旋CT诊断的9例阑尾粘液囊肿患者临床及影像学资料,9例患者均经术后病理检查确诊。结果CT平扫示病灶为右下腹阑尾区囊性包块,囊壁薄、边缘光滑,呈类圆形或椭圆形,密度均匀,最大径2.5~4.5cm,8例CT值7T9HU,1例呈软组织密度,周围肠系膜脂肪清晰,密度无明显增高;5例伴阑尾周围炎症者盲肠腔变形,囊壁无明显增厚,可见盲肠及回肠末端轻度弧形受压。增强扫描中5例无明显增强,4例囊壁轻度环形增强,囊壁均匀、光滑,可见点状钙化,囊内容物未见增强,CT值14-17HUo9例患者均经手术治疗,术后病理检查结果与CT诊断结果相符。结论多层螺旋CT检查及MPR重建技术可连续及完整地观察阑尾及周围组织情况,对阑尾粘液囊肿有较高的术前确诊率,有利于手术方案制定及并发症的预防。关健词:阑尾粘液囊肿;多层螺旋CT;诊断Abstract:ObjectiveToexploretheapplicationmethodsandclinicalvalueofMSCTinthediagnosisofappendixmucocele.MethodsAretrospectiveanalysisfromMay2007toJune2014,9casesofappendicealmucocelewithclinicalandimagingdata,diagnosedbyMSCTinourhospital,all9caseswereconfirmedbypathologicalexaminationafteroperation.ResultsOnnormalCTscan,thelesionsshowedcysticmassinthelowerrightquadrantabdominalappendixarea,withthinwalls,smoothedge,homogeneousdensity,wereroundorovalinshape,andwithmaximumdiameterof2・5~4.5cm,CTvalueof8casesofthemwasbetween7Hu〜19Hu,1caseshowedmasswithsofttissuedensity,andthemesenteryfataroundthemasswasclearlyseen.5caseswithperiappendicuralinflammationshoweddeformationofcaecumcavity,withoutthickeningofthewall,andthececumandterminalileumshowedmildvisiblearccompression.OncontrastCT,5casesshowednoenhancement,4casesshowedlightlyannularenhancementofwall,withsmoothanduniformwalls,punctatecalcification,thecontentsincystwerenotenhanced,CTvalueofthemwas14HU~17HU.All9casesweretreatedbyoperation,theresultsofpostoperativepathologicalexaminationwereasthesameastheresultsofCTdiagnosis.ConclusionObservationofappendixandthesurrounclingtissuescanbecontinuousandcompletebyuseofMSCTseanandtheMPRreconstructiontechnique,therateofpreoperativediagnosisofappendixmucocelewillbehigher,thisapplicationisusefulforoperationplanandpreventionofcomplications.Keywords:AppendixMucocele;MSCT;Diagnosis阑尾粘液囊肿(AppendicalMucoceleAMC)临床少见,因阑尾根部梗阻,腔内粘液积聚、扩张所致,临床表现不典型,易于误诊,术前确诊有助于防止术中囊肿破裂引发腹膜假粘液瘤,多层螺旋CT(MSCT)诊断阑尾病变临床价值已得到国内外学者充分肯定[1],2007年5月至2014年6月我院经多层螺旋CT诊断阑尾粘液囊肿患者9例,并经术后病理检查确诊,结合临床及影像学资料报告如下。1资料与方法1.1—般资料9例患者中男4例,女5例,年龄32~71岁,平均54.5岁,病史13h至17个月,主要表现为右下腹疼痛不适5例,部分患者轻压痛,无反跳痛,其中2例右下腹疼痛反复发作后合并轻度腹泻,经对症治疗后缓解,4例可触及右下腹包块,患者无自觉症状,5例患者既往有阑尾炎发作病史,实验室检查白细胞计数>10・0×109/L者4例,CEA、CA125等肿瘤标记物试验未见异常。临床诊断为阑尾炎、阑尾周围脓肿、腹痛待查,均行多层螺旋CT检查,诊断为阑尾粘液囊肿,术后经病理检查确诊。1.2检查方法采用GELightSpeed16排多层螺旋CT,电压120~150kV,电流180~220mAs,X线管旋转吋间0.5s/周,床速X线管旋转12.0mm/周,扫描范围从隔顶至耻骨联合,层厚5mm,层距5mm,螺距1.25,平扫后350mgl/ml碘海醇80^100ml静脉高压注射,注射流速2.5^3.0ml/s,嘱患者屏息,均行增强扫描。图像上传至工作站,常规冠状面与矢状面多平面...