Emergent endoscopic submucosal dissection for a polypoid fibroadipose tumor accidentally disgorged from the mouth: an organ-preserving minimally invasive treatment.

Video 1The yellow protruded lesion at the larynx is different from the main lesion.

Endoscopic submucosal dissection using an integrated needle-type knife and insulated-tip knife in a single device.

Video 1Endoscopic submucosal dissection using a multifunctional endoscopic submucosal dissection knife.

Endoscopic submucosal dissection of a gigantic gastric polyp aided by a novel retraction device and complicated by upper esophageal sphincter laceration during retrieval.

Video 1Endoscopic submucosal dissection of a sizeable gastric polyp with a short and broad stalk assisted by a novel traction device.

Endoscopic submucosal dissection with the combination of a scissor-type knife and novel traction method for colonic neoplasm involving a diverticulum.

Video 1A 35-mm laterally spreading tumor partially infiltrated the interior portion of the diverticular orifice in the ascending colon. Glycerol and hyaluronate solution were injected into the submucosa to maintain adequate mucosal elevation. Mucosal incision and submucosal dissection were performed using a DualKnife and insulation-tipped knife from the anal side; however, safe submucosal dissection was challenging with these knives because of severe fibrosis and abundant blood vessels in the diverticulum. Therefore, to improve the visibility of the submucosa, a scissor-type knife and a multiloop traction device was used to facilitate the submucosal dissection. Finally, en bloc resection was achieved in 117 minutes without adverse events. A part of the diverticular defect after endoscopic submucosal dissection was clipped to prevent delayed perforation.

Utility of a super-soft hood for esophageal endoscopic submucosal dissection below an esophageal stricture.

Video 1Use of a super-soft hood (Space Adjuster; TOP, Tokyo, Japan) for esophageal endoscopic submucosal dissection below an esophageal stricture.

Endoscopic submucosal dissection of appendiceal lesions by using a novel adjustable traction device: A-TRACT-2.

Video 1Dissections of appendiceal lesions using A-TRACT-2.

Hybrid resection of GI stromal tumor with endoscopic submucosal dissection and the full-thickness resection device.

Video 1Hybrid resection of gastric GI stromal tumor with endoscopic submucosal dissection and the Full-Thickness Resection Device.

Endoscopic adventitial dissection of a rectal GI stromal cell tumor.

Video 1Demonstration of endoscopic adventitial dissection.

Novel articulating through-the-scope traction device.

Video 1Parts and functions of the novel articulating traction device with its application in gastric and colonic endoscopic submucosal dissection procedures.

Traction wire endoscopic submucosal dissection: tips and techniques from 4 institutions.

Video 1Video presentation of traction wire endoscopic submucosal dissection: tips and techniques from 4 institutions.

Endoscopic submucosal dissection of a symptomatic giant colonic lipoma: technical tips for resection and specimen retrieval.

Video 1Endoscopic submucosal dissection of a giant colonic lipoma.

Gauze extension method for specimens resected by endoscopic submucosal dissection.

Video 1The gauze extension method for resected specimens.

Hybrid endoscopic submucosal dissection for anal canal fibroma.

Video 1Hybrid endoscopic submucosal dissection for anal canal fibroma.

Use of a novel dual-action clip for closure of complex endoscopic resection defects.

Video 1Use of dual-action clips and clips with added atraumatic teeth to close complex endoscopic resection defects.

A specimen collection technique to ensure that the resected specimen is safely retrieved after duodenal ESD.

Video 1Collection technique for the resected specimen after duodenal endoscopic submucosal dissection using endo-devices. Large grasping forceps were used in Case 1, and a collecting net was used in Case 2.

Duodenal subepithelial neuroendocrine tumor removed by endoscopic submucosal dissection using internal traction with magnets.

Video 1Endoscopic submucosal dissection of a duodenal subepithelial neuroendocrine tumor using internal traction with magnets.

Endoscopic submucosal dissection using traction by a spring-and-loop with clip for a laterally spreading tumor in the inferior aspect of the cecum: a nonreferral center experience.

Video 1Endoscopic submucosal dissection using traction by a spring-and-loop with clip for a laterally spreading tumor in the inferior aspect of the cecum: a nonreferral center experience.

Possibility of ultrathin endoscopy in radial incision and cutting for esophageal strictures.

Video 1The radial incision and cutting procedure using ultrathin endoscopy.

Endoscopic submucosal dissection with ductotomy for the resection of a gastric duplication cyst with a communicating duct.

Video 1The endoscopic submucosal dissection of the gastric duplication cyst with ductotomy of an incidental communicating duct.

Successful endoscopic ultrasound-guided nasocavitary catheter drainage of abscess caused by delayed perforation after gastric endoscopic submucosal dissection.

Video 1Successful EUS-guided nasocavitary catheter drainage of abscess caused by delayed perforation after gastric endoscopic submucosal dissection.