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

From: 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

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  
  1. *Statistically significant (P < 0.05)