Application of balloon occluder for specimen collection after descending duodenal ESD

Endoscopic submucosal dissection (ESD) is a popular technique for resecting duodenal tumors. However, there is a risk of losing resected specimens during the procedure, particularly for lesions in the descending part of the duodenum. This study aims to introduce a simple and effective method for specimen collection after descending duodenal ESD using a self-made balloon occluder. The balloon occluder, made from a spray pipe and sterile rubber glove, is utilized to prevent the loss of resected specimens. The balloon is inflated under endoscopic visualization, occluding the descending lumen. With careful timing, the resected specimen can be safely collected by grasping it from the balloon using foreign forceps. This method has been successfully applied in several cases, demonstrating its practicality and efficacy. Further evaluation and validation of this technique in a larger patient population are warranted to establish its wider application in clinical practice.