Impact of azathioprine on the prevention of postoperative Crohn's disease recurrence: results of a prospective, observational, long-term follow-up study

Inflammatory Bowel Diseases
Eugeni DomènechMiquel A Gassull

Abstract

Postoperative recurrence (PR) occurs early after intestinal resection in >75% of Crohn's disease (CD) patients. No well-established strategy for long-term PR prevention is available. The aim was to prospectively evaluate the long-term endoscopic and clinical outcomes of postoperative CD on maintenance treatment with azathioprine (AZA), especially in patients who developed endoscopic lesions confined to the ileocolic anastomosis. Long-term AZA therapy (2-2.5 mg/kg/day) was initiated immediately after surgery in 56 consecutive patients who underwent a curative intestinal resection. Clinical and biological assessments every 3 months, as well as yearly endoscopic evaluation, were performed until the end of the study or clinical PR (CPR). Thirty-seven patients (70%) showed mucosal lesions at endoscopy after a median of 12 months (range 12-60); however, in 15 of these patients lesions were confined to the anastomosis and only 6 showed endoscopic progression, but none of them developed CPR. Among the remaining 22 patients with endoscopic PR (EPR), 23% suffered a CPR during follow-up. Thirty percent of patients remained free of EPR after a median follow-up of 33 months (range 12-84). The cumulative probability of EPR was 44%, 53%, 69%,...Continue Reading

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