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Radiological Diagnosis of Flat or Depressed Epithelial Tumor of the Large Intestine-Contrast with Endoscopic and Macroscopic Appearance Masahiko Hirakawa 1 , Tadahiko Fuchigami 1 , Hiroshi Daimaru 2 1Institute of Gastroenterology, Matsuyama Red Cross Hospital 2Department of Pathology, Matsuyama Red Cross Hospital Keyword: 陥凹型早期大腸癌 , 陥凹型大腸上皮性腫瘍 , X線診断 , 肉眼分類 pp.879-888
Published Date 1992/8/25
DOI https://doi.org/10.11477/mf.1403109948

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  • Abstract
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 We evaluated the macroscopic classification and radiologic diagnosis of 43 flat or depressed superficial epithelial tumors of the large intestine. Macroscopically they were classified as follows; 10 superficial flat (Ⅱb), 7 superficial depressed without marginal elevation (Ⅱc), 10 superficial depressed with marginal elevation consisting of non-neopiastic tissue (Ⅱc+Ⅱa), 4 slight elevation with marginal elevation consisting of non-neoplastic tissue (Ⅱa+Ⅱc'), and 12 depressed with marginal elevation consisting of tumor (Ⅱa+Ⅱc). The macroscopic classification should be discussed under the same grade of extension of the bowel wall because the macroscopic appearance of the superficial epithelial tumors, except for Ⅱa+Ⅱc type, changed with pneumatic distention. The radiological detectability differed from macroscopic shape in 30% (Ⅱb), 71% (ⅡC), 90% (Ⅱc+Ⅱa), 50% (Ⅱa+Ⅱc'), and 100% (Ⅱa+Ⅱc), respectively. The radiologic finding of these detectable lesions was an irregularly shaped barium fleck with surrounding radiolucency, irrespective of macroscopic shape and size of the tumor. It was necessary to avoid pneumatic overextention in order to show marginal elevation and to prepare the x-ray equipment so as to demonstrate the surrounding network pattern of normal mucosa. In this way, it was possible to detect flat or depressed epithelial tumor of the large intestine.


Copyright © 1992, 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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