There was no statistically significant difference in preoperative serum concentrations of patients with B3 thymomas compared to patients suffering from TCs (B3 thymomas vs. TCs: CRP 2.05 ± 1.14 mg/dL vs. 2.33 ± 0.73 mg/dL; p = 0.825). This evidence concerns the gene CRP and thymoma.