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Table 3 Predictive value of ultrasonography (US) features in thyroid lesions

From: Diagnostic accuracy of ultrasonographic features for lymph node metastasis in papillary thyroid microcarcinoma: a single-center retrospective study

US feature Sensitivity (%) Specificity (%) PPV (%) NPV (%) Accuracy (%)
Round shape 41.4 75.9 49.1 69.8 63.5
Loss of echogenic fatty hilum 29.7 98.7 92.7 71.4 73.9
Cystic change 28.9 91.7 65.5 69.7 69.1
Calcification 34.4 94.3 77.2 71.9 72.8
Abnormal vascularity 32.8 77.6 45.2 67.3 61.5