细针穿刺洗脱液甲状腺球蛋白诊断甲状腺乳头状癌颈部淋巴结转移的阈值及效能分析  

Thyroglobulin assessment in needle washout after fine needle aspiration for diagnosis of cervical lymph metastasis of thyroid papillary carcinoma:threshold and efficacy

作　　者：崔亭亭 李俨育 王茜 傅晓凤 范公林 高力[5] 谢磊[5] 章德广[5] 朱江 Cui Tingting;Li Yanyu;Wang Qian;Fu Xiaofeng;Fan Gonglin;GaoLi;Xie Lei;Zhang Deguang;Zhu Jiang(Department of Diagnostic Ultrasound,Women's Hospital School of Medicine Zhejiang University,Hangzhou 310006,China;Department of Diagnostic Ultrasound,Taizhou Hospital of Traditional Chinese Medicine,Taizhou 318000,China;Department of Diagnostic Ultrasound,the First People's Hospital of Linhai City,Linhai 317000,China;Department of Diagnostic Ultrasound,Sir Run Run Shaw Hospital of Zhejiang University College of Medicine,Hangzhou 310016,China;Department of Head Neck Surgery,Sir Run Run Shaw Hospital of Zhejiang University College of Medicine,Hangzhou 310016,China)

机构地区：[1]浙江大学医学院附属妇产科医院超声科,杭州310006 [2]浙江省台州市中医院超声科,318000 [3]浙江省临海市第一人民医院超声科,317000 [4]浙江大学医学院附属邵逸夫医院超声科,杭州310016 [5]浙江大学医学院附属邵逸夫医院头颈外科,杭州310016

出　　处：《中华医学超声杂志（电子版）》2023年第2期219-226,共8页Chinese Journal of Medical Ultrasound(Electronic Edition)

基　　金：国家自然科学基金(81974470);浙江省自然科学基金(LY18H180001,Z22H189860)。

摘　　要：目的探讨甲状腺乳头状癌(PTC)术前细针穿刺洗脱液甲状腺球蛋白(FNA-Tg)诊断颈部淋巴结转移的阈值及效能。方法回顾性分析2016年7月至2018年1月于浙江大学附属邵逸夫医院头颈外科行甲状腺结节手术的410例患者共541个淋巴结的FNA-Tg结果。以术后淋巴结病理结果为“金标准”,绘制ROC曲线得出FNA-Tg对颈部淋巴结转移的最佳诊断阈值及效能分析;根据血清甲状腺球蛋白(sTg)将淋巴结分为低sTg组(sTg≤10 ng/ml)和高sTg组(sTg>10 ng/ml),绘制ROC曲线分析2组的FNA-Tg最佳诊断阈值;并对Tg比值法(FNA-Tg/sTg)和Tg差值法(FNA-Tg-sTg)的诊断阈值和效能进行分析。结果绘制FNA-Tg诊断淋巴结转移与非转移的ROC曲线,得出FNA-Tg的最佳诊断阈值为0.835 ng/ml,取最佳截断值时,其敏感度、特异度分别为88.5%、97.5%;ROC曲线下面积为0.944(95%CI:0.914~0.974)。FNA-Tg水平与sTg水平相关(r=0.350,P<0.001),根据sTg水平将淋巴结分为低sTg组296个和高sTg组245个,2组FNA-Tg的最佳诊断阈值分别为0.825 ng/ml(ROC曲线下面积为0.909;95%CI:0.838~0.981)、0.875 ng/ml(ROC曲线下面积为0.951;95%CI:0.918~0.984)。Tg比值法0.145为最佳诊断阈值(ROC曲线下面积为0.922;95%CI:0.889~0.955),其敏感度、特异度、阳性预测值、阴性预测值分别为82.7%、95.5%、85.3%、94.3%;Tg差值法>0(ROC曲线下面积为0.841,95%CI:0.802~0.879)为诊断阈值时的敏感度、特异度、阳性预测值、阴性预测值分别为74.8%、93.3%、79.4%、91.5%。结论FNA-Tg诊断术前PTC患者颈部淋巴结转移可采用不同的诊断阈值,当FNA-Tg为0.835 ng/ml,诊断性能较好;为避免sTg水平可能带来的影响,可综合考虑Tg比值法及Tg差值法。Objective To explore the threshold and efficacy of thyroglobulin assessment in the needle washout after fine needle aspiration(FNA-Tg)in the preoperative diagnosis of cervical lymph metastasis of thyroid papillary carcinoma(PTC).Methods A retrospective analysis was performed on the FNA-Tg results of a total of 541 lymph nodes in 410 patients who underwent thyroid node surgery at the Department of Head Neck Surgery,Sir Run Run Shaw Hospital of Zhejiang University College of Medicine from July 2016 to January 2018.Taking the postoperative lymph node pathological results as the"gold standard",the ROC curve was plotted to obtain the optimal diagnostic threshold of FNA-Tg for cervical lymph node metastasis and evaluate its diagnostic efficacy.According to the level of serum thyroglobulin(sTg),the lymph nodes were divided into either a low sTg group(sTg≤10 ng/ml)or a high sTg group(sTg>10 ng/ml),the ROC curve was plotted to analyze the diagnostic threshold of FNA-Tg in the two groups.The diagnostic threshold and efficacy of FNA-Tg/sTg ratio and FNA-Tg-sTg difference were then analyzed.Results The ROC curve of FNA-Tg for diagnosis of lymph node metastasis was plotted,and the optimal diagnostic threshold of FNA-Tg was determined to be 0.835 ng/ml.Using this threshold as the cut-off point,the sensitivity and specificity were 88.5%and 97.5%,respectively,and the area under the ROC curve(AUC)was 0.944(95%CI:0.914~0.974).The level of FNA-Tg was correlated with the level of sTg(r=0.350,P<0.001).Then,the lymph nodes were divided into either a low sTg group(n=296)or a high sTg group(n=245)according to the level of sTg,and the optimal diagnostic threshold for the two groups was determined to be 0.825 ng/ml(AUC=0.909,95%CI:0.838~0.981)and 0.875 ng/ml(AUC=0.951,95%CI:0.918~0.984),respectively.The optimal diagnostic cut-off of FNA-Tg/sTg ratio was determined to be 0.145;using this cut-off,the AUC of FNA-Tg/sTg ratio was 0.922(95%CI:0.889~0.955),and the sensitivity,specificity,positive predictive value,and negative predictive value

关 键 词：甲状腺乳头状癌 淋巴结转移 甲状腺球蛋白 超声引导细针穿刺 

分 类 号：R445.1[医药卫生—影像医学与核医学] R736.1[医药卫生—诊断学]