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Naohisa YAHAGI

Cancer Center, Keio University
Tokyo, Japan
MD, PhD
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Endoscopic Submucosal Dissection (ESD) of the rectum for a large rectal polypoid lesion: a live educational procedure
Endoscopic Submucosal Dissection (ESD) is an endoscopic technique which allows ‘en bloc’ resection of early stage tumors and polyps in the gastrointestinal tract. In this case, Professor Yahagi presents the case of a 67-year-old male patient with an incidental finding of a large rectal polyp during an MRI study. Colonoscopy revealed a 5cm laterally spreading tumor granular type (LST-G) of the rectum, extending to one fourth of the rectal circumference. The ESD was performed with a dual channel gastroscope in retrovision due to the proximity of the LST-G to the anal verge. Glycerol and indigo carmine were injected into the submucosal plane to lift the target lesion. The mucosal incision followed by submucosal dissection was performed with a 1.5mm DualKnife™ (Olympus) using a swift coag electrosurgical setting. Hemostasis of large vessels was performed switching to the forced coag effect. The vascular submucosal network has been carefully assessed. All critical steps are evaluated during the procedure.
Surgical intervention
24 days ago
400 views
9 likes
1 comment
43:23
Endoscopic Submucosal Dissection (ESD) of the rectum for a large rectal polypoid lesion: a live educational procedure
Endoscopic Submucosal Dissection (ESD) is an endoscopic technique which allows ‘en bloc’ resection of early stage tumors and polyps in the gastrointestinal tract. In this case, Professor Yahagi presents the case of a 67-year-old male patient with an incidental finding of a large rectal polyp during an MRI study. Colonoscopy revealed a 5cm laterally spreading tumor granular type (LST-G) of the rectum, extending to one fourth of the rectal circumference. The ESD was performed with a dual channel gastroscope in retrovision due to the proximity of the LST-G to the anal verge. Glycerol and indigo carmine were injected into the submucosal plane to lift the target lesion. The mucosal incision followed by submucosal dissection was performed with a 1.5mm DualKnife™ (Olympus) using a swift coag electrosurgical setting. Hemostasis of large vessels was performed switching to the forced coag effect. The vascular submucosal network has been carefully assessed. All critical steps are evaluated during the procedure.