Abstract:Objective To analyze the efficacy of endoscopic submucosal excavation (ESE) and submucosal tunnel endoscopic resection (STER) on submucosal tumors (SMTs) at the esophagogastric junction (EGJ), and analyze the risk factors of postoperative complications.Methods 80 patients with EGJ SMTs from January 2018 to January 2019 were selected and divided into ESE group and STER group according to the treatment method, and were classified into non-complication group and complication group according to the occurrence of postoperative complications. The lesion resection time, metal clip suture wound time, operation time, tumor size, intraoperative blood loss and postoperative hospital stay were observed. The incidence of adverse reactions in each group was compared. The patients were followed up at 3, 6 and 12 months after operation to observe the wound healing and analyze the residual lesions and recurrence. Age, type 2 diabetes, chronic lung disease, operation time, tumor size, and tumor pathological characteristics were collected from each group. Multivariate Logistic regression analysis was used to analyze the influencing factors of postoperative complications.Results The lesion resection time in ESE group was shorter than that in STER group, while the metal clip suture wound time was longer than that in STER group (P < 0.05), but there were no statistical differences in other indicators between the two groups (P > 0.05). Among patients with different tumor sizes, the lesion resection time in ESE group was shorter, while the metal clip suture wound time was longer than that in STER group (P < 0.05). There were no statistically significant differences in other indicators between the two groups (P > 0.05). Re-examination of gastroscopy at 12 months after surgery showed that the surgical wound of patients healed well, and no residual lesion or recurrence was found. The age of patients in complication group was significantly older than that in non-complication group, and the operation time was longer than that in non-complication group, and the tumor size was significantly larger than that in non-complication group, and the proportions of type 2 diabetes and chronic lung disease were significantly higher than those in non-complication group (P < 0.05). Multivariate Logistic regression analysis showed that age, type 2 diabetes, chronic lung disease, operative time and tumor size were risk factors of postoperative complications.Conclusion ESE and STER are effective and safe in the treatment of EGJ SMTs. Age, type 2 diabetes, chronic lung disease, operation time and tumor size are all risk factors for postoperative complications. Early targeted treatment can help improve the prognosis of patients.