Cure8 research brief
The review examines whether removing the appendix could change the course of ulcerative colitis — a potential surgical option that might lower colectomy or hospitalization risk in some scenarios but also carries uncertain risks.
Adults with ulcerative colitis (especially refractory cases), IBD clinicians/surgeons, and researchers focused on the appendix, immune pathways, or the gut microbiome.
The review synthesizes observational studies, immunology research, surgical case series, population reports, and prospective trials since 2000. Observational data suggest appendicectomy before UC diagnosis is associated with lower rates of colectomy and UC-related hospital admissions.
Appendicectomy after diagnosis, when appendiceal inflammation is present, has in some studies been linked to higher colectomy risk; removal without inflammation appears not to clearly reduce relapse or complications.
Some series report that patients with refractory UC may achieve longer remission after appendicectomy, but other studies raise concerns about possible increases in colorectal cancer risk through immune and microbiome changes.
Overall, medical therapy remains first-line; appendicectomy is discussed as a possible adjunct in carefully selected cases, and the authors call for large multicenter studies and randomized trials to define patient selection and long-term outcomes.
Narrative review based on studies since 2000; findings are mixed and observational signals need confirmation by randomized, multicenter trials. Abstract-level content used for this summary.
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