Impact of fecal diversion in Perineal Necrotizing Soft Tissue Infection on disease survival: A large retrospective study.

Introduction: Colostomy is usually proposed during the acute phase of Fournier Gangrene, nevertheless its impact on disease outcome remains still debated. We conducted a retrospective study in an academic center to determine the impact of fecal diversion on disease morbidity and specific survival. Methods: All medical charts of Fournier Gangrene cases in the past 30-years were reviewed. Mortality rate, hospitalization duration, time to complete healing and number of excision surgeries were compared between the stoma and the non-stoma groups. Time between initial diagnosis and stoma creation, type of fecal diversion, as well as specific morbidity were analyzed. Results: Of 89 patients included, 59 had stoma creation. Stoma group had significant higher catecholamine drugs use. Mortality, time to complete healing and number of excision surgeries did not significantly differ between both groups. Hospitalization duration was significantly higher in the stoma group. Mortality and hospitalization duration were higher when loop transverse colostomy was performed, and when colostomy was done in the first 3-days. Morbidity occurred in 41 % of patients with colostomy, with 25 % life-threatening complications. 31 % of colostomies remained definitive, while median time to intestinal recovery was 159-days. Discussion: Consistently with current literature, disease survival was not improved by colostomy creation although skewed. Colostomy creation was associated with a higher hospitalization duration and a significant morbidity including risk of definitive stoma. To limit over-indicated stoma and improve early results, a damage control strategy using colostomy creation is advised. Conclusion: The benefit of colostomy during the acute phase of Fournier Gangrene was uncertain, with no clear impact on mortality. In fact, colostomy was associated with increased hospitalization duration and specific morbidity. Finally, when fecal diversion is deemed necessary, we advocate for coelioscopic delayed loop left colostomy. Alternative minimally invasive treatment as bowel catheters should also be discussed.