Table 5.

The comparison of physical examination and radiologic imaging results with histopathologic results.

	A	B		Sensitivity	Specificity	Accuracy (A)	PPV	NPV
		No	Yes
Palpation	No	9	9	47	92	66.7	0.88	0.57
	Yes	4	8
CT scans	No	12	5	70.6	92.3	80.0	0.92	0.70
	Yes	1	12
USE	No	11	3	82.4	84.6	83.3	0.87	0.78
	Yes	2	14

A, the number of necks with/without pathological lymph nodes; B, the number of necks with/without histopathological positive lymph nodes.