All of the data were analyzed with statistical software (SPSS statistical package, version 19.0; IBM Corporation). Continuous variables were expressed as means ± standard deviations or median (interquartile range (IQR)), and categorical variables were presented as numbers (percentages). Kolmogorov-Smirnov tests were applied to check the normality of variables. Mann-Whitney U tests were used for non-normally distributed data. Two-sample t tests were used for normally distributed data. Chi-square tests or Fisher’s exact tests were applied to compare categorical variables. Spearman’s correlation was performed to analyze the relationship between clinical variables (age, fever, CRP, white blood cell count, neutrophil count, lymphocyte count, platelet count, hemoglobin level, and procalcitonin level) and CT variables (maximum diameter of the lesion and CT score). For all test results, a p value of less than 0.05 was considered statistically significant.