Journal
JOURNAL OF CROHNS & COLITIS
Volume 12, Issue 4, Pages 452-457Publisher
OXFORD UNIV PRESS
DOI: 10.1093/ecco-jcc/jjx177
Keywords
Bariatric surgery; Crohn's disease; ulcerative colitis; obesity
Categories
Funding
- Janssen
- Takeda
- UCB
- AbbVie
- Genentech
- Pfizer
- Amgen
- Robarts Clinical Trials
- Gilead
- Receptos
- Celgene
- MedImmune
- Seres
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Background: Case reports of inflammatory bowel diseases [IBD] have been reported in patients with a history of bariatric surgery. Our aim was to characterize patients who were diagnosed with IBD after having undergone bariatric surgery. Methods: Electronic medical records were reviewed at two institutions to identify patients who developed de-novo Crohn's disease or ulcerative colitis [UC] after bariatric surgery. Data on demographics, type of bariatric surgical procedure, IBD subtype, phenotype and medication usage were obtained. The incidence rate of de-novo IBD after bariatric surgery [per 100 000 person-years] and standardized incidence ratio [SIR] were estimated from a prospective bariatric surgery database. Results: A total of 44 patients with de-novo IBD after bariatric surgery were identified [31 Crohn's disease, 12 UC, one IBD unclassified]. Most patients were female [88.6%], with median age at IBD onset of 44 years [IQR, 37-52] and median time to IBD diagnosis after bariatric surgery of 7 years [IQR, 3-10]. Sixty-eight per cent underwent Roux-en-Y gastric bypass. In the prospective database, the incidence of IBD in patients who underwent bariatric surgery was 26.7 per 100 000 person-years [4.5 for UC and 22.3 for Crohn's disease]. The age-adjusted SIR ranged from 3.56 in the 40-49 year age group to 4.73 in the 30-39 year age group. Conclusion: We described a case series of patients developing de-novo IBD after bariatric surgery. There appears to be a numerically higher incidence of Crohn's disease in this population. Confirmation of causality is required in larger patient cohorts.
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