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High-magnification Endoscopic Diagnosis of the Stratified Squamous Esophageal Cancer Haruhiro Inoue 1 , Cho Joo-Young 1 1Digestive Disease Center, Showa University Northan Yokohama Hospital Keyword: 拡大内視鏡 , 上皮乳頭内ループ状血管 , IPCL超拡大内視鏡 , レーザー共焦点顕微鏡 pp.1629-1640
Published Date 2003/11/25
DOI https://doi.org/10.11477/mf.1403100722
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 Observation of the superficial fine vascular network pattern is the most important diagnostic process in magnifying endoscopy of the esophagus. When we use magnifying endoscopy (GIF-Q240Z), 80-fold magnifying power is acquired and IPCL (intra-epithelial papillary capillary loop) is clearly demonstrated. In carcinoma in situ, IPCL shows characteristic changes such as dilatation, weaving, different caliber, and different shape in each IPCL. Cancer infiltration depth also corresponds to the destruction level of IPCL. In submucosally invasive cancer, new abnormal tumor vessels (Vn) can be seen.

 On the other hand, authors have endeavored to see living cells of the esophagus during endoscopic examination. Using micromachine technology and a laser scanning confocal microscope, we succeeded in observing a living human cell. EndoMicroscopy system (prototype, Olympus) has a 500-fold magnifying power. In normal squamous epithelium, a nucleus is shown as a high intensity spot and the cell body is observed as a low intensity area. This distribution interchanges once the tissue becomes carcinomatous. This finding was statistically proven. In cancerous tissue, Swiss cheese sign is the most important finding. We believe that this kind of non-invasive optical diagnosis will come to play a very important role in the field of endoscopy.


Copyright © 2003, 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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