Management of Terminal Ileitis

Primary Recommendation

• The European Crohn's and Colitis Organisation (ECCO) and the European Society of Coloproctology (ESCP) consensus explicitly states that appendectomy of a macroscopically normal appendix in the presence of terminal ileitis has an elevated risk of intra-abdominal septic complications and fistulas 1, 2, 3

Rationale for Avoiding Appendectomy

• Terminal ileitis at emergency exploration is non-specific and cannot reliably differentiate between Crohn's disease and infectious etiologies intraoperatively 1, 2, 3
• The ileitis can typically be treated medically in the absence of stricturing or penetrating disease, which are not described in this case 1, 2, 3
• Removing a normal appendix in the setting of terminal ileitis significantly increases the risk of intra-abdominal abscess formation and fistula development 1, 2, 3
• Definitive diagnosis requires full assessment and multidisciplinary consultation after the acute setting, not intraoperative decision-making 1, 2, 3

Postoperative Management Algorithm

• Clinical monitoring for signs of complications (abscess, perforation, sepsis) 4
• Colonoscopy with ileoscopy and biopsies to establish definitive diagnosis of Crohn's disease versus infectious/other etiologies 5, 6
• Stool studies to exclude infectious causes (bacterial pathogens, parasites) 5, 6
• Consider MR enterography if Crohn's disease is confirmed to assess extent of small bowel involvement 7

Critical Pitfalls to Avoid

• Do NOT perform appendectomy just because you're already in the abdomen—this significantly increases morbidity 1, 2, 3
• Do NOT assume this is definitely Crohn's disease without proper postoperative workup, as infectious causes are common and treatable 1, 2
• Do NOT perform ileocecal resection in the emergency setting without definitive diagnosis and assessment for medical management options 1, 2, 3