Abstract:Objective To explore the effect of endoscopic treatment of esophageal stenosis after endoscopic injection sclerotherapy (EIS).Methods A retrospective analysis of the treatment of 12 cases of esophageal stenosis after EIS from June 2018 to September 2021 was reviewed.Results After endoscopic balloon dilation (1~3 times) in 7 patients, the dysphagia symptoms of esophageal stenosis improved; 2 patients after 4 balloon dilations and then endoscopic scar incision, the symptoms of dysphagia were relieved; 1 patient was treated with endoscopic scar incision and oral hormone therapy after two balloon dilations, and the esophageal stenosis improved; 2 patients directly underwent endoscopic scar incision, difficulty swallowing is alleviated.Conclusion Endoscopic balloon dilatation is commonly used to treat esophageal stenosis after EIS, but it needs to be repeated many times; endoscopic scar incision can cut the scar tissue of esophageal stenosis more accurately, and the effect is better. The number of cases in this retrospective analysis is small, and more samples are needed to further evaluate the efficacy.