Abstract:Objective To compare the risk of postoperative complications in patients with endoscopic submucosal dissection (ESD) at different ages and lesion sites.Methods 120 patients with ESD from June 2019 to June 2021 were studied. According to their age at the time of operation, they were divided into elderly group (≥ 60 years old, 52 cases) and non elderly group ( < 60 years old, 68 cases). The information of gender and lesion location (including esophagus, stomach, duodenum, colon and rectum) were compared between the two groups. The incidence of postoperative complications (fever, postoperative perforation, stenosis and bleeding) in the two groups were counted, the complications of different lesion sites in the two groups were counted. The total complications of different lesion sites were counted. The different single factor information was included in the Logistic model, and the quantitative evaluation was performed to clarify the risk factors of complications after ESD.Results There was no significant difference in gender and lesion location between the two groups (P > 0.05). The incidence of postoperative fever and stenosis in the elderly group was significantly higher than that in the non elderly group (P < 0.05), there was no significant difference in the incidence of perforation and bleeding between the two groups (P > 0.05). There was no significant difference in the incidence of complications of esophagus, stomach, duodenum, colon and rectum between the two groups (P > 0.05). There was a significant difference in the total incidence of complications at different lesion sites (P < 0.05). Multivariate Logistic regression analysis confirmed that old age and esophageal lesions were risk factors for postoperative complications in ESD, both with P < 0.05.Conclusion The risk of ESD complications of digestive diseases in the esophagus is high. Therefore, when treating elderly patients with digestive diseases, patients need to be closely observed and conduct timely intervention to reduce the incidence of postoperative complications.