Table 2.

Studies evaluating the performance of FDG PET for the detection of distant metastases and synchronous 2nd tumor in HNC.

Author year	Number of patients	Positive PET	True positive (distant mets + 2nd primary)	False positive	Notes
Ng et al. [34], 2009	111	16	13/16	3/16	CT/MR detect 4/16
Chua et al. [35], 2009	68	6	5/6	1/6	CT + BS detect 4/6
Liu et al. [36], 2007	300	61	50/61	11/61
Yen et al. [37], 2005	118	32	24/32	8/32
Goerres et al. [12], 2003	34	8	7/8	1/8	PET modified Treatment in 15%
Sigg et al. [38], 2003	58	8	7/8	1/8	PET modified Treatment in 5%
Schwartz et al. [39], 2003	33	7	7/7	0/7
Total	722	138	113/138	25/138