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Published on: May 31, 2024
Pre-pouch ileitis after colectomy in paediatric ulcerative colitis
Carrie Slatter1, Safwat Girgis, Hien Huynh
1Division of Pediatric Gastroenterology, Hepatology and Nutrition, Stollery Children's Hospital, Edmonton, and Department of Pathology, University of Alberta, Edmonton, Alberta, Canada.
Insights
Terminal ileitis can occur in children with ulcerative colitis (UC) after colectomy and ileal pouch anal anastomosis (IPAA). This complication should not rule out a UC diagnosis, even if Crohn
Area of Science:
- Pediatric Gastroenterology
- Inflammatory Bowel Disease Research
- Surgical Complications
Background:
- Colectomy with ileal pouch anal anastomosis (IPAA) offers curative potential for ulcerative colitis (UC).
- Terminal ileitis is a rare, poorly documented postoperative complication of IPAA, particularly in pediatric patients.
Observation:
- Two pediatric patients with medically refractory UC underwent colectomy with IPAA.
- One year post-surgery, both presented with bloody diarrhea and weight loss.
- Endoscopic and biopsy findings revealed acute-on-chronic inflammation in the pouch and terminal ileum.
Findings:
- The inflammation showed a mixed inflammatory infiltrate without granulomas.
- Terminal ileitis developed in pediatric patients following IPAA for UC.
- This complication occurred despite efforts to rule out Crohn's disease.
Implications:
- Terminal ileitis can occur in children with UC post-IPAA and does not exclude a UC diagnosis.
- Further research is crucial to understand the pathogenesis of this uncommon condition.
- Clinical management should consider terminal ileitis as a potential complication in pediatric UC patients post-IPAA.
Unlabelled:
Colectomy and ileal pouch anal anastomosis (IPAA) is a potentially curative option for patients with ulcerative colitis (UC). A rare, postoperative complication is terminal ileitis which has been poorly documented in paediatric patients. A search of our paediatric inflammatory bowel disease (IBD) database revealed two boys with UC who were resistant to medical therapy. They each underwent colectomy with IPAA. One year later, both children represented with bloody diarrhoea and weight loss. Several endoscopies and biopsies showed acute on chronic mucosal inflammation in the pouch and up to 50 cm into the terminal ileum (TI). Biopsies revealed mixed inflammatory infiltrate with no granulomas.
Conclusion:
Development of terminal ileitis after colectomy and IPAA can occur in children with UC. Although every effort should be made to exclude Crohn's disease as a cause of the terminal ileitis, this poorly defined condition should not be considered to be against the diagnosis of UC. More research is needed to develop a better understanding of the aetiopathogenesis of this uncommon condition.
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