252个结节中良性结节189个,恶性结节63个,常规超声、超声造影诊断PCTN的灵敏度、特异度、准确度、阳性预测值、阴性预测值分别为82.0%、88.9%、84.1%、95.7%、62.2%和89.9%、85.7%、88.9%、94.9%、73.9%,曲线下面积(area under curve,AUC)分别为0.854、0.878。联合诊断后灵敏度、特异度、准确度、阳性预测值、阴性预测值分别为95.8%、84.1%、92.9%、94.8%、86.9%,AUC为0.899,明显高于单一的诊断方式(
To investigate the diagnostic value of conventional ultrasound combined with contrast-enhanced ultrasound in the diagnosis of partially cystic thyroid nodule (PCTN).
Methods:
A retrospective analysis was performed on 252 patients with PCTN detected by ultrasound and pathological results obtained by fine-needle puncture or surgical operation from January 2018 to August 2022. Al
l patients were single nodules. All patients underwent contrast-enhanced ultrasound examination before surgery. With pathological results as the gold standard
receiver operating characteristic (ROC) curve was drawn to compare the diagnostic efficacy of contrast-enhanced ultrasound
conventional ultrasound and conventional ultrasound combined with contrast-enhanced ultrasound.
Results:
Of the 252 nodules
189 were benign and 63 were malignant. The sensitivity
specificity
accuracy
positive predictive value and negative predictive value of conventional ultrasound and contrast-enhanced ultrasound in the diagnosis of PCTN were 82.0%
88.9%
84.1%
95.7%
62.2% and 89.9%
85.7%
88.9%
94.9%
73.9%
respectively. The area under curve (AUC) was 0.854 and 0.878
respectively. After combined diagnosis
the sensitivity
specificity
accuracy
positive predictive value and negative predictive value were 95.8%
84.1%
92.9%
94.8% and 86.9%
respectively
and the AUC was 0.899
which significantly higher than the single diagnostic method (
P
<0.05).
Conclusion:
Conventional ultrasound and contrast-enhanced ultrasound have high diagnostic efficacy for PCTN
and the combined application of the two can improve the diagnostic sensitivity
accuracy and negative predictive value
which is helpful to guide the treatment and management of PCTN.