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Table 3 Sensitivities, specificities, positive predictive values, negative predictive values and diagnostic accuracy of intraoperative ultrasonography, computed tomography, and endoscopic ultrasonography in the detection of left recurrent laryngeal nerve lymph node metastasis

From: Diagnostic value of intraoperative ultrasonography in assessing thoracic recurrent laryngeal nerve lymph nodes in patients with esophageal cancer

  Pathology Sensitivity Specificity NPV PPV Accuracy
+
IU + 11 10 91.7% 79.2% 97.44% 52.38% 81.7%
  1 38 95%CI = 61.4%~ 99.8% 95%CI = 66.2%~ 90.0%  
CT + 2 0 16.7% 100.0% 82.76% 100% 83.3%
  10 48 95%CI = 2.1%~ 43.4% 95%CI = 92.6%~ 100.0%  
EUS + 4 7 40.0% 82.5%, 84.62% 36.36% 74%
  6 33 95%CI = 12.2%~ 76.6% 95%CI = 66.9%~ 97.4%  
  1. Abbreviations: CI Confidence interval, CT Computed tomography, EUS Endoscopic ultrasonography, IU Intraoperative ultrasonography, NPV Negative predictive value, PPV Positive predictive value, RLN Recurrent laryngeal nerve
  2. For diagnosis of left RLN lymph nodes. The sensitivity had statistically significant difference (χ2 = 14.067, P = 0.001)
  3. For diagnosis of left RLN lymph nodes. The specificity had statistically significant difference. (χ2 = 10.819, P = 0.004)
  4. For diagnosis of left RLN lymph nodes. The NPV had no statistically significant difference (χ2 = 5.009, P = 0.82)
  5. For diagnosis of left RLN lymph nodes. The PPV had no statistically significant difference (χ2 = 2.866, P = 0.239)
  6. For diagnosis of left RLN lymph nodes. The diagnostic accuracy had no statistically significant difference (χ2 = 1.646, P = 0.439)
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