Delayed bleeding after endoscopic submucosal dissection for non-ampullary superficial duodenal neoplasias might be prevented by prophylactic endoscopic closure: Analysis of risk factors

Background and Aim Duodenal endoscopic submucosal dissection (ESD) is technically challenging because of anatomical specificities and, to date, has not been validated concerning the high rate of complications such as perforation and delayed bleeding. In the present study, the risk factors for delayed bleeding after duodenal ESD are presented with the goal of establishing preventive measures. Methods We analyzed 63 patients with non-ampullary superficial duodenal neoplasias treated by ESD from April 2005 to March 2014. To analyze the risk factors of delayed bleeding after duodenal ESD, we divided the patients into a delayed bleeding group and a non-bleeding group. To verify the risk factors of delayed bleeding after duodenal ESD, we analyzed various patient-, lesion-, and treatment-related factors. Results Delayed bleeding was experienced in 11 patients (17.5%) Univariate analysis of patient-related risk factors of delayed bleeding indicated no significant risk factor. Univariate analysis of lesion-related and treatment-related risk factors indicated only endoscopic closure as a significant risk factor. Multivariate analysis also identified endoscopic closure (not done > done: P = 0.049) as an independent factor significantly associated with delayed bleeding after duodenal ESD. Hypertension (present > absent: P = 0.055) showed a non-significant tendency of association by multivariate analysis. Conclusions This retrospective evaluation found that endoscopic closure was associated with a reduced risk of delayed bleeding after duodenal ESD. Delayed bleeding after duodenal ESD might be prevented by prophylactic endoscopic closure.