ESR1 and juvenile polyposis syndrome: With a mean of 52.14 mg/L (1.9-293.7) for PJI and 8.26 mg/L (0.2-45.30) for AL, CRP levels were almost seven times higher in the PJI group (p < 0.001), and ESR levels were almost three times higher in the PJI group than AL, with a mean of 52.43 mm/h (5-89) and 18.29 mm/h (2-48), respectively (p < 0.001).