Characteristics  Pathologic lymph nodes status  Predictive Value (PV)  P value  
−ve LNs = 47 cases  +ve LNs = 22 cases 

 
Clinical Examination (C/E) 




−ve LNs  38 cases (True negative)  3 cases (False positive)  −ve PV: 93%  <0.008 
+ve LNs  9 cases (False negative)  19 cases (True positive)  +ve PV: 68%  
Ultrasonography (U/S) 




−ve L.N.  40 cases (True negative)  3 cases (False positive)  −ve PV: 93%  <0.001 
+ve L.N.  7 cases (False negative)  19 cases (True positive)  +ve PV: 73%  
Combined (C/E&U/S) 




−ve L.N.  40 (True negative)  1 (False positive)  −ve PV: 98% 

+ve L.N.  7 (False negative)  21 (True positive)  +ve PV: 75% 
