Externally removable stents in the treatment of benign recalcitrant strictures and esophageal perforations in pediatric patients with esophageal atresia

BackgroundWe investigated whether removable stents, such as self-expandable plastic stents (SEPSs) and fully covered self-expandable metal stents (FCSEMSs) could provide an alternative treatment for recalcitrant strictures and esophageal perforations after esophageal atresia (EA) repair.ObjectiveThe primary aim of our study was to evaluate technical feasibility. Secondary aims were to evaluate safety and procedural success.DesignRetrospective study.SettingTertiary-care referral center.PatientsA total of 24 children with EA.InterventionsRetrospective review of all children with EA who underwent dilation and esophageal stent placement from January 2010 to February 2013 at our institution.Main Outcome MeasurementsHealing of perforation and stricture resolution at 30 and 90 days.ResultsA total of 41 stents (SEPSs 14, FCSEMSs 27) were placed in 24 patients with EA during the study period, including 14 who had developed esophageal leaks. Procedural success of esophageal stent placement in the treatment of refractory strictures was 39% at 30 days and 26% at 90 days. The success rate was 80% for closure of esophageal perforations with stent therapy after dilation and 25% for perforations associated with surgical repair. Adverse events of stent placement included migration (21% of SEPSs and 7% of FCSEMSs), granulation tissue (37% of FCSEMSs), and deep ulcerations (22% of FCSEMSs).LimitationsRetrospective study with small sample size.ConclusionSEPSs and FCSEMSs can be placed successfully in small infants and children with a history of EA repair. The stents appear to be safe and beneficial in closing esophageal perforations, especially post-dilation. However, a high stricture recurrence rate after stent removal may limit their usefulness in treating recalcitrant esophageal anastomotic strictures.