CRP and juvenile polyposis syndrome: In the study mentioned above by Shohat et al. [25], the authors explain that clinicians should interpret leukocyte esterase based on the serological test results: when the leukocyte esterase result is concordant with an ESR and CRP, the PJI diagnosis is accurate, but, in case of discordancy, the strict thresholds of leukocyte esterase (++ or negative) should be considered [28].