The associations between preoperative CRP, SCC-Ag, SUVtumor-max, SUVnodal-max and clinicopathologic parameters (n = 106).

Abbreviation: CRP: C-reactive protein;SCC-Ag: squamous cell carcinoma antigen; SUVtumor-max: maximum standardized uptake valve in tumor; SUVnodal-max: maximum standardized uptake valve in lymph nodes. CRP (−): CRP level <5.0 mg/L; CRP (+): CRP level ≥5.0 mg/L; SCC-Ag (−): SCC-Ag <2.0 ng/ml; SCC-Ag (+): SCC-Ag ≥2.0 ng/ml; SUVtumor-max (−): SUVtumor-max level <8.6 mg/L; SUVtumor-max (+): SUVtumor-max level ≥8.6 mg/L; SUVnodal-max (−): SUVnodal-max <5.7 ng/ml; SUVnodal-max (+): SUVnodal-max ≥5.7 ng/ml. *Chi-square test; **Chi-square trend test; †differentiation: 8 cases the differentiation could not be identified.