Table 2 Diagnostic efficacies of perfusion defect, interruption of bright ring and both of them in CLNM.

From: Effectiveness of Lymphatic Contrast Enhanced Ultrasound in the diagnosis of Cervical Lymph node metastasis from papillary thyroid carcinoma

LCEUS signs

AUC (95% CI)

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

Accuracy (%)

Perfusion defect

0.899 (0.752–1.000)

92.3

87.5

96.0

77.8

91.2

Interruption of bright ring

0.904 (0.803–1.000)

80.8

100

100

61.5

85.2

Both signs

0.962 (0.898–1.000)

92.3

100

100

80.0

94.1

  1. LCEUS lymphatic contrast enhanced ultrasound, AUC area under curve, PPV positive predictive value, NPV negative predictive val.
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