Risk factors and prevention and treatment methods of anastomotic stricture after esophageal atresia repair: a literature review.

Abstract

This review examines the common risk factors associated with anastomotic stricture (AS) following esophageal atresia (EA) repair and evaluates the current understanding and clinical practices concerning esophageal dilation, which remains the predominant therapeutic approach. We present emerging evidence on adjunctive therapies for recurrent and refractory strictures, including esophageal stenting, endoscopic incision therapy, mitomycin C application, local steroid injections, cell sheet transplantation, and surgical interventions. A comprehensive literature review was conducted using PubMed, with a cutoff date of December 31, 2024, encompassing all relevant studies and reviews pertinent to this topic, with a particular emphasis on refractory and recurrent strictures. Given the scarcity of evidence-based data on AS in children with EA, we also critically analyze findings from adult literature and studies addressing esophageal strictures caused by various etiologies to provide a more comprehensive understanding. The pathogenesis of AS is multifactorial, with a key contributing factor being the significant gap between the proximal and distal esophageal segments. This anatomical disparity increases anastomotic tension, thereby elevating the likelihood of stricture formation. A thorough identification and detailed understanding of the risk factors associated with AS are crucial for enhancing patient outcomes and developing effective preventive strategies. Currently, the evidence regarding esophageal dilation is insufficient to establish the superiority of any single technique, particularly between balloon and bougie dilators. Recurrent and refractory strictures remain a challenge, as no pharmacological and mechanical adjunctive interventions have demonstrated sufficient feasibility, efficacy, and safety to fundamentally change clinical practice. While some results show promise, transformative outcomes have not yet been achieved, and further research is needed to establish evidence-based best treatment strategies.