Endoscopic Ultrasonographic Diagnosis of the Depth of Invasion of Early Gastric Cancer for Determing the Indication for Endoscopic Mucosal Resection (EMR) Akimichi Chonan 1 , Toshiyuki Mishima 1 , Fukuji Mochizuki 1 1Digestive Endoscopy Center, JR Sendai Hospital Keyword: 早期胃癌 , EMR , EUS診断 pp.1625-1632
Published Date 2001/12/25
DOI https://doi.org/10.11477/mf.1403103385
  • Abstract
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 The diagnostic ability of EUS for discerning the depth of invasion of early gastric cancer was compared with that of endoscopy in 173 patients with 182 lesions of early gastric cancer. In size, macroscopic type, microscopic type and depth of ulceration, the lesions indicated their suitability for EMR. Because of difficulty in evaluation of the depth of invasion less than 1 mm, we diagnosed the lesions such as M-SM1 (SM invasion was less than 1 mm) and SM2 (SM invasion was more than 1 mm).

 The depth of invasion was correctly diagnosed in 166 lesions (91.2%) by not only EUS but also endoscopy.

 As regards macroscopic type or site of the lesion, the accuracy rate of the diagnosis of the depth of invasion by EUS was high, but it was hardly different from that of endoscopy.

 We encountered five lesions (2.7%) of early gastric cancers which were correctly diagnosed by EUS, though inaccurately diagnosed by endoscopy. On the other hand, we encountered four lesions (2.2%) which were correctly diagnosed by endoscopy, though inaccurately diagnosed by EUS.

 In conclusion, it was hard to say that EUS examination was necessary for determining the indication for EMR.

Copyright © 2001, Igaku-Shoin Ltd. All rights reserved.


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