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Refinements in Colorectal Endoscopic Submucosal Dissection (ESD)―How to Use Sinker-Assisted ESD and CO2Insufflation Yutaka Saito 1 , Tsuyoshi Kikuchi 1 , Masakatsu Fukusawa 1 , Hajime Takisawa 1 , Haruhisa Suzuki 1 , Toshio Uraoka 1 , Takahisa Matsuda 1 , Daizo Saito 1 1Division of Endoscopy, National Cancer Center Hospital, Tokyo Keyword: endoscopic submucosal dissection , ESD , insulation-tipped knife , IT knife , bipolar needle knife , B-knife , carbon dioxide (CO2) insufflation , sinker-assisted ESD , sinker-ESD pp.1101-1107
Published Date 2007/6/25
DOI https://doi.org/10.11477/mf.1403101137
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 Endoscopic submucosal dissection (ESD) is accepted as a minimally invasive treatment for early gastric cancer, but it is not widely used in the colorectum because of its technical difficulty.

 Procedures were carried out using an insulation-tipped knife (IT knife) and a bipolar needle knife (B-knife) with carbon dioxide (CO2) insufflation. After injection of glycerol and sodium hyaluronate acid into the submucosal layer, a circumferential incision was made and submucosal dissection was performed endoscopically.

 CO2insufflation, which has been proven safe and effective during colorectal ESD, has been used recently at the National Cancer Center Hospital in Tokyo.

 ESD for large colorectal lesions is more difficult to perform because of the difficulty in visualizing the cutting line. For such cases, therefore, we also have developed a sinker-assisted ESD procedure that has been carried out successfully in six cases.

 ESD is a feasible technique for treating large superficial colorectal tumors because it provides a higher en-bloc resection rate and is less invasive than surgical resection.


Copyright © 2007, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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