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Objectives: Few reports are available on post-colectomy enteritis (PCE) with ulcerative colitis (UC), which can be severe and sometimes fatal. The clinical characteristics are unclear, and treatment and diagnosis protocols have not been established. We aimed to investigate the incidence, clinical characteristics, diagnostic criteria, and therapeutic outcomes of PCE in this study. Methods: Patients with UC who underwent colectomy between April 2010 and December 2019 were included in this study. We retrospectively analyzed patients who developed PCE and excluded patients with other forms of enteritis. Results: We performed 829 colectomies because of a preoperative diagnosis of UC. Eleven and four patients were diagnosed with Crohn's disease and indeterminate colitis after surgery, respectively; 22 patients developed enteritis in the perioperative period. We excluded six patients with backwash ileitis, five with prepouch ileitis, three with infectious enteritis, and one with ischemic enteritis. In total, 7/814 (0.8%) patients developed PCE. All patients with PCE had pancolitis. PCE was observed a median of 33 (12-248) days after surgery. Endoscopy showed friable and granular mucosa. The extent of disease included various types such as pan-enteritis with diffuse type, pan-enteritis and mild inflammation in the middle ileum, and only ileitis. Gastroduodenitis-associated UC developed in 6/7 cases. All patients improved with tumor necrosis factor alpha (TNFα) antagonists even if TNFα antagonists had not been effective for colitis. Conclusions: PCE was rare. The mucosal endoscopic findings were similar to those of UC, and the extent of disease varied. TNFα antagonist administration for PCE was effective.

Background and Aim To evaluate the clinical value of capsule endoscopy (CE) in patients with intestinal Behçet's disease (BD). Methods The present study was a case-control pilot study conducted in intestinal BD patients and healthy volunteers. A total of 19 patients with intestinal BD (intestinal BD group) and 19 healthy volunteers (control group) matched for age and sex were enrolled. Frequency, number of small bowel lesions per subject, and Lewis score were comparatively evaluated between the two groups. Results Of the 19 patients with intestinal BD, 18 (94.7%) had reddened lesions, 15 (78.9%) had erosions, and nine (47.4%) had ulcers. There were significant differences in the frequency of reddened lesions ( P < 0.0001), erosions ( P < 0.0001) and ulcers ( P = 0.0011) between the two groups. The difference in the number of small bowel lesions between the two groups was also statistically significant. The median Lewis score in the intestinal BD group was significantly higher than that in the control group (intestinal BD group 237 (0-768) vs control group 8 (0-135); P < 0.0001). Analysis according to the location in the small bowel revealed that the frequency of ulcers tended to increase towards the distal intestine. Conclusion This is the first CE study conducted to examine small bowel involvement in intestinal BD patients. Our results suggest that CE evaluation is necessary, in addition to colonoscopy, in all intestinal BD patients. [ABSTRACT FROM AUTHOR]