TABLE 2

Results of ¹⁸F-FDG PET on 51 BSCC Patients in Head and Neck Region

Site	FN (n)	TP (n)	TN (n)	FP (n)	Sensitivity			Specificity			Accuracy			AUC	P
Site	FN (n)	TP (n)	TN (n)	FP (n)						%	95% CI (%)	%	95% CI (%)	AUC	P	%	95% CI (%)
Main
CT/MRI	0	51	0	0	100		—		100
¹⁸F-FDG PET + CT/MRI	0	51	0	0	100		—		100
Retropharyngeal LN												0.089
CT/MRI	1	0	50	0	0		100		98	90–100	0.500
¹⁸F-FDG PET + CT/MRI	0	1	50	0	—		100		100		1
Level I LN												0.290
CT/MRI	6	19	21	5	76	55–91	81	61–93	78	65–89	0.853
¹⁸F-FDG PET + CT/MRI	3	22	24	2	88	69–98	92	75–99	90	79–97	0.915
Level II LN												0.020
CT/MRI	4	4	38	5	50	16–84	88	75–96	82	69–92	0.717
¹⁸F-FDG PET + CT/MRI	1	7	39	4	88	47–100	91	78–97	90	79–97	0.974
Level III LN												0.110
CT/MRI	2	2	46	1	50	7–93	98	89–100	94	84–99	0.729
¹⁸F-FDG PET + CT/MRI	1	3	46	1	75	19–99	98	89–100	96	87–100	0.981
Level IV LN												0.440
CT/MRI	2	0	49	0	0		100		96	87–100	0.490
¹⁸F-FDG PET + CT/MRI	1	1	49	0	50	1–99	100		98	90–100	0.730
Level V LN
CT/MRI	0	0	50	1	—		98	90–100	98	90–100
¹⁸F-FDG PET + CT/MRI	0	0	51	0	—		100		100
Total LN												0.026
CT/MRI	15	25	254	12	63	46–77	96	92–98	91	87–94	0.837
¹⁸F-FDG PET + CT/MRI	6	34	259	7	85	70–94	97	95–99	96	93–98	0.939
Total lesions												0.026
CT/MRI	15	76	254	12	84	74–91	96	92–98	92	89–95	0.928
¹⁸F-FDG PET + CT/MRI	6	85	259	7	93	86–98	97	95–99	96	94–98	0.973

FN = false-negative; TP = true-positive; TN = true-negative; FP = false-positive; CI = confidence interval; LN = lymph node.