Nodal status CK19
(cut-off value = 0.025)
  Positive Negative
Positive for malignancy 47 13
Negative for malignancy 20 39
Accuracy (%)
Sensitivity (%)
72.3
78.3
Specificity (%) 66.1
Table 3: Accuracy, sensitivity, and specificity of multiplex real-time RT-PCR of CK19 (LightCycler 2.0, Roche).