This study is a single center retrospective analysis with inherent selection bias in its design; The limited number of cases included in the study, especially the small sample size of the recurrence group, may limit the detection of significant associations such as comorbidities and IL-6 levels; The included cases in the study are those who are under 1 year old and have uncertain diagnoses (such as IBD, polyps, intussusception, etc.), which may also lead to selection bias. Here, IL6 is linked to inflammatory bowel disease.