Timing and morbidity of loop ileostomy closure after rectal cancer resection: a prospective observational multicentre snapshot study from Multidisciplinary Italian Study group for STOmas (MISSTO)

Purpose: Time to closure and morbidity are significant issues associated with ileostomy reversal after rectal cancer resection. This study aimed to investigate the rate, time, and morbidity associated with ileostomy closure procedure. Methods: Between February and December 2022, patients who underwent protective ileostomy after rectal cancer surgery across 45 Italian surgical centres were prospectively included. Data on ileostomy closure times, surgical methods, and complications were collected and analyzed. Both univariate and multivariate statistical tests were employed to assess stoma closure rates and the occurrence of post-operative complications. Results: A total of 287 patients participated in the study. Ileostomy closure was achieved in 241 patients, yielding overall and 6-month closure rates of 84% and 62%, respectively. The median time for ileostomy closure was 146 days. Direct sutures were used to close approximately 70% of skin defects, while purse-string sutures were applied in around 20%. The overall morbidity rate was 17%, with complications including skin suture dehiscence (7%), small bowel obstruction (6%), and anastomotic leakage (2%). Multivariate analysis revealed that an American Society of Anesthesiologists (ASA) score > 2 (p = 0.028), advanced age (p = 0.048), and previous stoma complications (p = 0.048) were independently linked to failure of stoma closure; hypertension (p = 0.036) was found to be a significant independent risk factor for post-operative complications. Conclusion: This study demonstrated that a delay and a significant no-closure rate exist in ileostomy reversal after rectal cancer surgery. Post-operative complications remain high but can be prevented with adequate pre-operative assessment and post-operative care.