TABLE 1

SUVs of Various Regions of Waldeyer's Ring and Salivary Glands in the Healthy, Asymptomatic, Symptomatic, and NPC Groups

			SUV
Group	n	Mean age ± SD (y)	Nasopharynx	Palatine tonsil	Lingual tonsil	Soft palate	Parotid gland	Submandibular gland	Sublingual gland
Healthy	30	51.9 ± 9.6
Mean			1.36	3.22	2.22	2.50	1.13	1.43	2.32
SD			0.28	0.71	0.63	0.45	0.27	0.37	0.87
Asymptomatic	53	48.7 ± 10.9
Mean			2.90^*^†	3.97^*^†	2.58^*^†	2.74	1.30	1.68^*^†	2.69
SD			1.02	1.54	0.85	0.75	0.60	0.48	0.90
Symptomatic	27	43.4 ± 9.2
Mean			3.18^*^†	3.97^*^†	2.89^*^†	2.88	1.33	1.65^*^†	2.47
SD			1.38	1.58	1.08	2.03	0.49	0.47	0.87
NPC	21	48.1 ± 14.9
Mean			7.03^*	3.31	2.21	2.55	1.23	1.38	2.64
SD			3.83	0.95	0.80	0.75	0.48	0.41	0.95

↵* Significant difference (P < 0.05) compared with healthy group.
↵† Significant difference (P < 0.05) compared with NPC group.
Nasopharynx = LPR of nasopharynx.