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Diagnostic Imaging for Early Gastric Cancer─Further Examination for Assessment of Depth of Invasion(Methods and Diagnostic Capability) : X-ray Examination Yoshinori Sugino 1 , Yujiro Nakamura 2 , Norihito Wada 3 , Yoshiro Saikawa 3 , Yuko Kitagawa 3 , Toshifumi Hibi 4 , Hiroyuki Imaeda 5 , Makio Mukai 6 1Department of Diagnostic Radiology, Keio University School of Medicine, Tokyo 2Department of Radiation Technology, Keio University Hospital, Tokyo 3Division of General and Gastrointestinal Surgery, Department of Surgery, Keio University School of Medicine, Tokyo 4Division of Gastroenterology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 5Department of Diagnostic and Therapeutic Endoscopy, Keio University Hospital, Tokyo 6Department of Diagnostic Pathology, Keio University School of Medicine, Tokyo Keyword: 陥凹型早期胃癌 , X線診断 , 深達度診断 , 二重造影法 , 圧迫法 pp.593-607
Published Date 2009/4/24
DOI https://doi.org/10.11477/mf.1403101632

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 We investigated assessment of depth of invasion using X-ray examination in 508 cases with 554 gastric carcinomas─intramucosal(M, n=243 lesions), submucosal(SM1, n=43 lesions ; SM2, n=119 lesions), and deeper than the lamina propria mucosa(MP, n=149 lesions)─resected by endoscopy or surgery at Keio University over the past 3 years. The rates of correct diagnosis were as follows : M,91.3% ; 79.3% ; MP,89.9% ; no cases of SM1 carcinoma were detected on X-ray examination.

 The features of thickening, decreased extensibility, or sclerosing of the gastric wall were useful findings to evaluate invasion deeper than the SM layer among depressed type lesions, which account for approximately 80% of cases of early gastric cancer. To demonstrate gastric characteristics by X-ray with double contrast imaging, we modulated the thickness of contrast media around the lesion to estimate the height or outline of thickening, and also assess the properties of the surface or margins of carcinoma to estimate the location of thickening, i. e., the intramucosal or submucosal layer. Evaluation of properties as well as hardness of the thickened part by manipulation with the compression method provides a more accurate diagnosis. In the X-ray study, it is important to develop ways to exhibit these manifestations using compression or double contrast methods for accurate determination of the depth of invasion.


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

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