甲状腺结节影像学特征对FNAC诊断结果的影响
2018-09-10王进芬成娜吴涛童歌郑博文刘勇连宇帆张红君郑荣琴任杰
王进芬 成娜 吴涛 童歌 郑博文 刘勇 连宇帆 张红君 郑荣琴 任杰
【摘要】目的探讨影响超声引导下甲状腺细针穿刺细胞学(FNAC)检查诊断结果的结节影像学特征。方法442例甲状腺结节患者(463个结节),均接受FNAC检查,将结果按照BethesdaSystem分类标准分为无法诊断组(Ⅰ级)和适合诊断组(Ⅱ~Ⅵ级),比较2组结节的影像学特征,用Logistic回归分析影响FNAC检查诊断结果的影像学特征。结果无法诊断组为45例患者的45个结节(97%),适合诊断组为405例患者的418个结节(903%),FNAC无法诊断率为97%(45/463)。结节伴粗大钙化、环状钙化和中央供血是甲状腺结节FNAC检查的独立影响因素,其中结节伴粗大钙化(OR=282,95%CI128~622,P=0010)及环状钙化(OR=738,95%CI177~3080,P=0006)是FNAC检查无法诊断的危险因素,结节伴中央供血(OR=012,95%CI002~092,P=0041)则是FNAC检查无法诊断的保护因素。结论甲状腺结节伴粗大钙化或环状钙化会增加FNAC无法诊断率,因此在行FNAC检查时应尽量避免穿刺粗大钙化、环状钙化区域。
【关键词】甲状腺结节;活组织检查,细针;超声检查;诊断
EffectofimagingfeaturesofthyroidnoduleonthediagnosticoutcomesofFNACWangJinfen,ChengNa,WuTao,TongGe,ZhengBowen,LiuYong,LianYufan,ZhangHongjun,ZhengRongqin,RenJieDepartmentofUltrasound,theThirdAffiliatedHospitalofSunYatsenUniversity,Guangzhou510630,China
Correspondingauthor,RenJie,Email:renjieguangzhou@126com
【Abstract】ObjectiveToinvestigatetheeffectofimagingfeaturesofthyroidnodulesuponthediagnosticoutcomesofultrasoundguidedthyroidfineneedleaspirationcytology(FNAC)MethodsAtotalof442patientsdiagnosedwiththyroidnodules(463nodules)underwentFNACexaminationTheresultswereclassifiedintoundiagnosable(gradeⅠ)anddiagnosable(gradeⅡtoⅥ)groupsaccordingtotheBethesdaSystemclassificationcriteriaTheimagingfeaturesofthethyroidnoduleswerestatisticallycomparedbetweentwogroupsTheeffectofimagingfeaturesuponthediagnosticoutcomesofFNACwasanalyzedbyLogisticregressionanalysisResultsIntheundiagnosablegroup,45patientswith45thyroidnodules(97%)wereassigned,and405patientswith418thyroidnodules(903%)wereallocatedintothediagnosablegroupTheundiagnosablerateofFNACwascalculatedas97%(45/463)Noduleswithmacrocalcification,peripheralcalcification,andcentralvascularityweretheindependentinfluencingfactorsforFNACexaminationofthyroidnodulesAmongthesefactors,thyroidnoduleswithmacrocalcification(OR=282,95%CI:128622,P=0010)andperipheralcalcification(OR=738,95%CI:1773080,P=0006)weretheriskfactorsfortheundiagnosableresultsbyFNACexamination,whereasnoduleswithcentralvascularity(OR=012,95%CI:002092,P=0041)wasaprotectivefactorfortheundiagnosableoutcomesbyFNACexaminationConclusionsThyroidnoduleswithmacrocalcificationorperipheralcalcificationwillincreasetheundiagnosablerateofFNACTherefore,itisrecommendedtoavertthepunctureintheareawithgrossandcircularcalcificationduringtheFNACexamination
【Keywords】Thyroidnodule;Biopsy,Fineneedle;Ultrasonography;Diagnosis
甲狀腺结节发病率日益增高,超声引导下甲状腺细针穿刺细胞学(FNAC)检查是鉴别结节良恶性最准确的术前诊断手段[12]。但是,研究显示这一方法的无法诊断率达04%~47%,成为普及该手段的最大障碍[3]。
FNAC检查无法诊断的主要原因是穿刺细胞量过少,不足以做出明确诊断,或细胞变形、血凝块遮挡细胞影响观察。以往研究者发现囊性成分多、低回声结节、结节内含粗大钙化、结节直径过小等是FNAC检查无法诊断的主要影响因素[34]。但大部分研究仅纳入了结节的部分超声特征,更为重要的是,超声特征的定义及分类并不统一。……
