Results of the Eighth Scientific Workshop of ECCO: Diagnosing postoperative recurrence of Crohn's disease after an ileocolonic resection with ileocolonic anastomosis.

Despite the introduction of potent biological therapies, many patients with Crohn's disease (CD) still require an ileocolonic resection (ICR) throughout the course of their disease. Furthermore, the need of redo ICR has not decreased over the last few decades, highlighting the need for better strategies to prevent and treat postoperative recurrence (POR). The first step to develop such a strategy would be to define and standardise the description of POR with adequate diagnostic instruments. In this article, we will describe the different methodologies used to report POR (endoscopic, histological, radiological, biochemical, clinical and surgical), and review their potential benefits and limitations, as well as the optimal timing of evaluation.