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Table 3 Summarizes sensitivity, specificity, PPV, NPV, accuracy and p value of suspicious US finding of TN

From: The diagnostic value of ultrasonography in detection of different types of thyroid nodules

Suspicious US finding Histopathology Sensitivity Specificity PPV NPV Accuracy P value
Benign (n = 34) Malignant (n = 16)
No. % No. %
Taller than wider 3 8.8 15 93.8 93.75 91.18 83.33 96.88 92.0 0.001
Oval shape 24 70.6 16 100 100.0 29.41 40.0 100.0 52.0 0.020
Hypoechoic 13 38.2 14 87.50 87.50 61.76 51.85 91.30 70.0 0.001
Ill-defined halo 0 0.0 4 25.0 25.0 100.0 100.0 73.91 76.0 0.008
Solid echotexture 30 88.2 16 100 100.0 11.76 34.87 100.0 40.0 0.292
Central vascularity 1 2.9 8 50.0 50.0 97.06 88.89 80.49 82.0 0.001
microcalcification 1 2.9 16 100 100.0 97.06 94.12 100.0 98.0 0.001