Fig. 4From: Relationships of 18F-FDG PET with tumor microenvironment immunotypes, especially PD-L1 and CD15 expression, and prognosis in oral squamous cell carcinomaBox-and-whisker diagrams show the distribution of the maximum standardized uptake value (SUVmax) in the high and low groups of programmed death ligand-1 (PD-L1) expression and CD8+, CD15+, S100A8+ and CD33+ cell counts. Significantly higher SUVmax, denoting higher fluoro-d-glucose uptake, was found in patients with PD-L1 expression group and in those with high CD15+ cell counts (P = 0.03 and P = 0.02, respectively). There was no significant difference in SUVmax with respect to the number of CD8+, S100A8+, or CD33+ cellsBack to article page