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  • Title: [Comparison of the diagnostic value of high frequency ultrasound and ultrasound-guided fine needle aspiration biopsy in papillary thyroid microcarcinoma].
    Author: Qin J, Zhang S, Li G, Liu S, Shi X, Wu J.
    Journal: Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi; 2021 Aug; 35(8):718-723. PubMed ID: 34304533.
    Abstract:
    Objective:To explore the application value of high frequency ultrasound and ultrasound-guided fine needle aspiration biopsy（US-FNAB） in the diagnosis of papillary thyroid microcarcinoma（PTMC）, and to compare the characteristics and value of the two methods, so as to find a more convenient and non-invasive diagnostic method of PTMC, reduce unnecessary puncture and operation. Methods:The data of 190 postoperative pathologically confirmed PTMC patients admitted to Henan Province Cancer Hospital and Henan Provincial Hospital from January to June 2020 were retrospectively analyzed, with a total of 305 nodules, including 198 PTMC nodules and 107 benign thyroid nodules（BTN）. According to the postoperative pathological results, they were divided into groups, and the relationship between the ultrasound appearance of the nodules and whether the cervical lymph nodes could be explored and PTMC was analyzed by chi-square test and logistic regression, and its diagnostic value was evaluated. The Kappa consistency test was used to analyze the consistency between ultrasound, FNAB and surgical pathological diagnosis results. The accuracy, sensitivity and specificity of high-frequency ultrasound and US-FNAB were compared, and the ROC curve was used to calculate the maximum area under the curve to evaluate its effectiveness. Results:The chi-square test showed that there were statistically significant differences in the morphology, margin, internal echo, echo uniformity, calcification, aspect ratio, blood flow signal, and whether the cervical lymph nodes can be detected and other ultrasound signs between the PTMC group and the BTN group. Logistic regression analysis showed that irregular shape, unclear edges, internal hypoechoic, intranodular calcification are independent risk factors for PTMC. By consistency test, the consistency between high-frequency ultrasound, US-FNAB examination and surgical pathological diagnosis was good, Kappa value was 0.802 and 0.893（P<0.05）. Each nodule was examined by high-frequency ultrasound, and the diagnostic sensitivity, specificity, accuracy and AUC were 95.45%, 83.18%, 91.15% and 0.877 respectively. US-FNAB was performed on 189 of 305 thyroid nodules, and the diagnostic sensitivity, specificity, accuracy and AUC were 96.03%, 93.65%, 95.24% and 0.948 respectively. Conclusion:High frequency ultrasonic features such as internal hypoechoic, calcification in the nodules, unclear edges, and irregular morphology are of high value for the diagnosis of PTMC. Through data analysis, both high-frequency ultrasound and US-FNAB examination have high diagnostic value for PTMC. Compared with US-FNAB, high-frequency ultrasound has the advantages of low examination cost, non-invasive, simple operation and so on. For some patients with PTMC who do not have high risk factors, ultrasound can be used to actively monitor disease progression to avoid some unnecessary surgery. 目的：探讨高频超声、超声引导下细针穿刺活检（US-FNAB）在甲状腺微小乳头状癌（PTMC）诊断中的应用价值，寻找PTMC更方便无创的诊断方法，减少不必要的穿刺及手术。 方法：回顾性分析2020年1月到6月期间，来自河南省肿瘤医院和河南省省立医院的190例PTMC患者资料，共305个结节，其中PTMC结节198个（PTMC结节组），甲状腺良性结节（BTN）107个（BTN结节组）。通过卡方检验和Logistic回归分析结节的超声表现及颈部淋巴结能否探及等因素与PTMC的关系，并评估其诊断价值；采用Kappa一致性检验，分析高频超声、US-FNAB与术后病理结果之间的一致性；对高频超声与US-FNAB的准确率、灵敏度和特异度进行比较，通过ROC曲线计算最大曲线下面积（AUC）评估其效能。 结果：卡方检验分析显示：PTMC结节组与BTN结节组的结节形态、边缘、内部回声、回声均匀度、有无钙化、纵横比、血流信号以及颈部淋巴结能否探及等超声征象的差异均有统计学意义；Logistic回归分析结果显示：形态不规则、边缘不清晰、内部低回声、结节内有钙化是PTMC的独立危险因素；经一致性检验，高频超声、US-FNAB检查与术合病理结果之间的一致性均良好，Kappa值分别为0.802、0.893（P<0.05）；每个结节均进行高频超声检查，其诊断灵敏度为95.45%，特异度为83.18%，准确率为91.15%，AUC为0.877；对305枚甲状腺结节中的189枚进行细针穿刺，其诊断灵敏度为96.03%，特异度为93.65%，准确率为95.24%，AUC为0.948。 结论：内部低回声、结节内有钙化、边缘不清晰、形态不规则等超声特征对于PTMC的诊断具有很高的价值；高频超声与US-FNAB检查对PTMC的诊断价值均较高。高频超声与US-FNAB相比具有检查成本低、无创、操作简单等优点。对于没有高危因素的PTMC患者，可以通过超声积极监控疾病进展避免不必要的手术。.
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