ARG2 and polyposis: Increased ARG2 levels were found in patients with chronic rhinosinusitis without polyposis compared to the control group (FR 3.14 ± 1.16 vs. 1.31 ± 0.21, p = 0.0175), while in patients with chronic rhinosinusitis and polyposis, although high ARG2 levels were detected (FR 1.81 ± 0.38), these were not significantly increased compared to the control group (Figure 3).