den13899-sup-0001-vidS1


Video S1 The colonoscope is pulled out from the anus. The colonoscope is reinserted into the anus through the Cusco’s speculum. Opening of the Cusco’s speculum. Grasped specimen is pulled out with the colonoscope. Colonoscope showing a huge rectal laterally spreading tumor. After rectal endoscopic submucosal dissection for a large lesion, a Cusco’s speculum was inserted into the anus with an endoscope. The specimen is grasped with the retrieval net. The specimen is pulled out smoothly through the Cusco’s speculum. Macroscopic image showing resected specimen (specimen size: 80 x 67 mm and lesion size: 60 mm x 51 mm, respectively).