P524 Endoscopic dilations of intestinal stenosis in Crohn’s disease

Abstract

Background The occurrence of intestinal stenosis is a common and potentially serious complication of Crohn’s disease (CD). These strictures represent 20% of the surgical indications in CD. Endoscopic dilation is an alternative to surgery for endoscopically accessible stenosis. The aim of this study is to evaluate the effectiveness of endoscopic balloon dilation (EBD) in CD intestinal stenosis. Methods This retrospective, descriptive study realized between January 2015 and October 2020, included CD patients diagnosed at least 6 months before and complicated with symptomatic intestinal stenosis (abdominal pain, bloating, nausea and vomiting). Anorectal strictures were excluded. All patients had a cross-sectional imaging before intestinal dilation to determine the characteristics of the stenosis and exclude abscess and fistula tract near the stenosis which constitute a contraindication of EBD. All patients underwent an EBD during a colonoscopy under sedation by propofol. The short-term success of EBD has been established on both technical (passage of the endoscope across the site of stenosis after dilation) and clinical level (relief of intestinal obstructive symptoms). The long-term efficacy was defined by no need for surgery within 6 months after dilation. Results Twelve patients (6 males and 6 females), with an average age of 32 years +/-7.7, were included. The average interval between onset of CD and the onset of intestinal stricture was 8 years. Eight patients had a history of bowel resection. The stenosis was located at the terminal ileum or ileocaecal valve in 4 cases, ileocolic anastomosis in 8 cases. The stenosis was ulcerated in 9 cases, inflammatory in 5 cases and polypoid in 3 cases. All patients were on medical treatment corticosteroids, Azathioprine and / or Anti TNF. We performed 18 EBD, divided into several sessions depending on the degree of stenosis (1 EBD, 2 EBD and 3 EBD in respectively 11, 3 and 2 patients). Two patients required surgery for persisting symptoms. Technical success was obtained in 11 patients (92% of cases). Clinical success, defined by a disappearance of clinical symptoms with an HBI score of less than 4, was obtained in 9 patients (75% of cases). The mean follow-up after dilation was 23 months (range from 8 to 42 months). No major complications were observed in this study. Conclusion EBD is an effective therapeutic technique relatively safe for intestinal CD stenosis, allowing to delay or better, to avoid surgical treatment when the stenosis is well selected (stenosis<4cm, single, anastomotic, non-angled, and without adjacent abscess or fistula).

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“…Etiological studies suggest that the inappropriate activation of the mucosal immune system is postulated to play a central role in the pathogeny of CD . Therefore, current treatment options focus on alleviating inflammation, such as the first-line mesalazine and the latest anti-TNF agents. − However, intestinal stenosis is still unaddressed, and the implementation of surgical resection have not reduced in clinical CD statistics . This suggests that the progress of anti-inflammatory strategies has not effectively avoided the adverse consequences of CD progression, and it is urgent to develop targeted therapeutics for intestinal stenosis.…”

“…8−10 However, intestinal stenosis is still unaddressed, and the implementation of surgical resection have not reduced in clinical CD statistics. 11 This suggests that the progress of anti-inflammatory strategies has not effectively avoided the adverse consequences of CD progression, and it is urgent to develop targeted therapeutics for intestinal stenosis.…”