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Ileal lesions in patients with ulcerative colitis after ileo-rectal anastomosis:Relationship with colonic metaplasia

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World Journal of Gastroenterology 2008年第34期14卷 5290-5300页

作者： Livia Biancone Emma Calabrese Giampiero Palmieri Carmelina Petruzziello Sara Onali Giuseppe Sigismondo Sica marta cossignani Giovanna Condino Kiron Moy Das Francesco Pallone Cattedra di Gastroenterologia Dipartimento di Medicina InternaUniversità di "Tor Vergata" Cattedra di Anatomia ed Istologia Patologica Università di "Tor Vergata" Cattedra di Gastroenterologia Dipartimento di Medicina InternaUniversità di "Tor Vergata" Cattedra di Chirurgia Generale Università di "Tor Vergata" Cattedra di Gastroenterologia Dipartimento di Medicina Interna Università di "Tor Vergata" GI Unit Department of Gastroenterology & Hepatology University of Medicine & Dentistry of New Brunswick

AIM:To assess whether in ulcerative colitis (UC) patients with ileo-rectal anastomosis (IRA), ileal lesions may develop in the neo-terminal-ileum and their possible relation with phenotypic changes towards colonic epithelium. METHODS: A total of 19 patients with IRA under regular follow up were enrolled, including 11 UC and 8 controls (6 Crohn’s disease, CD; 1 familial adenomatous polyposis, FAP; 1 colon cancer, colon K). Ileal lesions were identifi ed by ileoscopy with biopsies taken from the ileum (involved and uninvolved) and from the rectal stump. Staining included HE and immunohistochemistry using monoclonal antibodies against colonic epithelial protein CEP (Das-1) and human tropomyosin isoform 5, hTM5 (CG3). Possible relation between development of colonic metaplasia and ileal lesions was investigated.RESULTS: Stenosing adenocarcinoma of the rectal stump was detected in 1 UC patient. The neo-terminal ileum was therefore investigated in 10/11 UC patients. Ileal ulcers were detected in 7/10 UC, associated with colonic metaplasia in 4/7 (57.1%) and Das-1 and CG3 reactivity in 3/4 UC. In controls, recurrence occurred in 4/6 CD, associated with colonic metaplasia in 3/4 and reactivity with Das-1 and CG3 in 2/3. CONCLUSION: Present fi ndings suggest that in UC, ileal lesions associated with changes towards colonic epithelium may develop also after IRA. Changes of the ileal content after colectomy may contribute to the development of colonic metaplasia, leading to ileal lesions both in the pouch and in the neo-terminal ileum after IRA.

关键词：溃疡性结肠炎肠阻塞回盲肠吻合术结肠组织转化

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