Long-term risk of delayed postoperative Crohn's disease recurrence in patients with no or mild endoscopic recurrence at first assessment.

Long-term risk of POR among patients with no or mild endoscopic lesions at first ileocolonoscopy after surgery is steadily low, being higher among smokers, in the absence of postoperative prophylaxis and when mild endoscopic lesions are observed in the first endoscopic assessment.