Prognostic value of simultaneous 18F-FDG PET/MRI using a combination of metabolo-volumetric parameters and apparent diffusion coefficient in treated head and neck cancer

EJNMMI Research

Table 2 Comparison of clinicopathologic parameters according to head and neck cancer treatment failure after surgery

Parameters	Treatment failure (n = 22)	No evidence of disease (n = 50)	P value
Age (year)	55.7 ± 16.0	56.0 ± 14.1	0.947
Tumor site (R:L)	8:14	24:26	0.360
HPV status			0.381
Positive	4	6
Negative	4	17
T stage			0.019*
1/2	10	37
3/4	12	13
N stage			0.341
0	11	31
1/2	11	19
TNM stage			0.201
I/II	7	24
III/IVA	15	26
Lymphatic invasion			0.005*
No	11	41
Yes	11	9
Venous invasion			0.012*
No	16	47
Yes	6	3
Perineural invasion			0.008*
No	12	42
Yes	10	8
Adjuvant therapy			0.113
No	7	26
RT/CCRT	15	24