Abstract:Objective To explore the changes in serum interleukin-6 (IL-6), chemokine ligand 4 (CCL-4), and eosinophil cationic protein (ECP) levels in patients with chronic sinusitis and their predictive value for postoperative recurrence.Methods The clinical data of 154 patients with chronic sinusitis were retrospectively analyzed from December 2021 to December 2023, classified as the study group; 60 healthy subjects admitted for physical examination during the same period were included as the control group. Serum levels of IL-6, CCL-4, and ECP were compared between the two groups. Based on postoperative recurrence, patients in the study group were divided into recurrence group (n = 63) and non-recurrence group (n = 91), and serum IL-6, CCL-4, and ECP levels were compared between these subgroups. Receiver operating characteristic (ROC) curve analysis was used to evaluate the predictive efficiency of serum IL-6, CCL-4, and ECP levels for postoperative recurrence in patients with chronic sinusitis.Results Serum levels of IL-6, CCL-4, and ECP in the study group were significantly higher than those in the control group (P < 0.05). Serum IL-6, CCL-4, and ECP levels were significantly higher in the recurrence group than in the non-recurrence group (P < 0.05). ROC curve analysis showed that for predicting postoperative recurrence in patients with chronic sinusitis, the areas under the curve (AUC) for serum IL-6, CCL-4, and ECP were 0.768 (95% CI: 0.705, 0.822), 0.791 (95% CI: 0.731, 0.844), and 0.815 (95% CI: 0.755, 0.863), respectively. Sensitivities were 62.5% (95% CI: 0.538, 0.706), 77.94% (95% CI: 0.700, 0.846), and 67.65% (95% CI: 0.591, 0.754), respectively; specificities were 83.12% (95% CI: 0.729, 0.907), 74.03% (95% CI: 0.628, 0.834), and 80.52% (95% CI: 0.699, 0.887), respectively.Conclusion Serum levels of IL-6, CCL-4, and ECP are significantly elevated in patients with chronic sinusitis compared to healthy individuals and are associated with postoperative recurrence. Higher levels indicate a greater probability of recurrence. Early detection of serum IL-6, CCL-4, and ECP levels can effectively predict postoperative recurrence and provide a reference for early clinical preventive treatment.