Abstract:Objective To explore the clinical value of mini-incision combined with balloon dilatation under the guidance of miniprobe echoendoscope in the treatment of refractory benign esophageal stenosis.Methods From October 2019 to October 2023, 30 cases of esophageal early cancer with esophageal scar stenosis after endoscopic submucosal dissection (ESD) were selected and randomly divided into study group (miniprobe echoendoscope guided small incision + balloon dilatation, 15 cases) and control group [esophageal radial incision (ERI), 15 cases], EUS in the study group judged the hierarchical structure of esophageal wall before operation, and excluded those with esophageal cancer recurrence and submucosal invasive growth. According to miniprobe echoendoscope, the length of scar segment and the scope of scar ring lumen were defined, and the location and length of pre-incision were defined, and then balloon was used to expand step by step. The short-term postoperative complications, Stooler dysphagia scale score and restenosis rate of the two groups were observed, and the feasibility, safety and efficacy were evaluated.Results The incidence of short-term postoperative complications 6.7% in the study group was significantly lower than that 46.7% in the control group, the difference was statistically significant (P < 0.05), and the Stooler dysphagia scale score were (1.133 ± 0.990) and (1.600 ± 0.737) in the study group at 1 and 2 months after operation with significantly lower than those (2.067 ± 1.033) and (2.467 ± 0.915) in the control group, the differences were statistically significant (P < 0.05). Two months after operation, the restenosis rate was 13.3%, which was significantly lower than that 46.7% of the control group, the difference was statistically significant (P < 0.05), and the scar thickness under miniprobe echoendoscope (2.113 ± 0.887) mm was significantly thinner than that (3.353 ± 1.468) mm of the control group, the difference was statistically significant (P < 0.05).Conclusion Preoperative miniprobe echoendoscope evaluation, can accurately locate lesions, endoscopic mini-incision combined with balloon mechanical expansion are safe and effective, with less pain and fewer postoperative complication.