Abstract Background: Crohn’s disease needs a multidisciplinary approach and surgery will ultimately be necessary for most patients. Complications usually occur after surgery. Objective : This study aims to present complication rates in surgically treated Crohn's disease patients at a single institution and to determine possible risk factors. Methods: A retrospective analysis of 112 consecutive surgery performed on Crohn’s disease patients between 2003 and 2015. The demographic data, patient and disease characteristics, surgery type, and complications were analyzed. Results: Of 112 patients, 64 (57.1%) were male and 48 (42.9%) were female. The mean age was 34 (18-78) years. The mean follow-up was 114±32.4 (61-197) months. The most common early complications were intra-abdominal abscess formation (n=10, 8.9%) and wound infection (n=7, 6.26%). The incisional hernia was the most common late complication (n=4, 3.6%). Non-modifiable disease features associated with complications were colonic involvement of the disease (p=0.001), penetrating disease character (p=0.037), stoma formation (p=0.000), fistula (p=0.008) and concomitant fistula and intra-abdominal abscess (p=0.043) existence. Stoma formation was found to be an independent risk factor for complications (p=0.001). Conclusions: Colonic involvement, penetrating disease, fistula, concomitant abscess and fistula, and stoma formation were identified as non-modifiable risk factors for complications after surgery for Crohn’s disease.

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