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Summary: Endoscopy has an ever-increasing role in the treatment of complications in digestive surgery. Endoscopic treatment is essentially used for (i) fistula or intra-abdominal collection secondary to anastomotic dehiscence and (ii) anastomotic stricture, especially esophagogastric, but also sometimes after colorectal surgery. First intention treatment of fistula following esophagogastric surgery is the insertion of an extractable self-expandable metallic stent (partially or entirely covered); this is supported by a low level of scientific evidence, but clinical experience has been satisfactory. Other techniques for treatment of anastomotic leak have also been reported anecdotally (clip placement, sealing with glue). There are few data available in the literature on endoscopic management (stents essentially) of postoperative colonic fistula. Whatever the approach chosen to treat a postoperative digestive tract fistula, management is medico-surgical and cannot be limited to simple closure of the digestive tube wall defect. Drainage of any collections by endoscopic, radiologic or surgical approach, systemic treatment of infection and nutritional support are essential adjuvant treatment modalities. Treatment of postoperative esophageal or colonic strictures is essentially endoscopic and is based on initial dilatation (endoscopic with hydrostatic balloon or bougie), and placement of extractable metallic stents (partially or entirely covered) in case of refractory outcome. [Copyright &y& Elsevier]