雑誌文献を検索します。書籍を検索する際には「書籍検索」を選択してください。

検索

書誌情報 詳細検索 by 医中誌

Japanese

Diagnosis of the Depth of Invasion in Colorectal Cancer by Magnifying Endoscopy Takahiro Fujii 1 , Yasushi Oda 1 , Fumio Tamura 1 , Ikuo Koba 1 , Masana Ohkuwa 1 1Department of Internal Medicine, National Cancer Center Hospital East Keyword: 拡大内視鏡 , 深達度診断 , 腺ロ形態 , 側方発育型腫瘍 pp.1341-1352
Published Date 1996/10/25
DOI https://doi.org/10.11477/mf.1403104418
  • Abstract
  • Look Inside
  • Cited by

 We compared accuracy rate of preoperative diagnosis of the depth of invasion by ordinary endoscopic examination and that by magnifying endoscopic examination on the resected early colorectal cancers. There were no differences between accuracy rates by both examinations in the non-depressed lesions, but in the depressed lesions, magnifying endoscopic examination was significantly more accurate than ordinary endoscopic examination (accuracy rates: 100% (23/23) vs 75% (9/12), p<0.005). The non-depressed lesions less than 30 mm in size and the depressed lesions less than 20 mm in size with deeper than intramucosal and/or submucosal invasion were assessed for evaluating usefulness of magnifying endoscopic examination for diagnosis of depth of invasion. All the depressed lesions with deeper than submucosal invasion showed type Ⅴ pit pattern and histological feature of the tumor surface correlated to the amount of invasion and were regarded as a specific indicator of deep invasion. On the other hand, in the non-depressed lesions, although 89% of lesions with type Ⅴ pit pattern were accompanied by deep invasive cancer, in the group of deep invasive cancerous lesions the percentage of type Ⅴ pit pattern was the same as that of type Ⅳ pit pattern, therefore type Ⅴ pit pattern in the non-depressed lesions was not so specifically meaningful as that in the depressed lesions.

 The laterally-spreading tumor was divided into the granular type (homogenous granular type and nodule intermingled type) and non-granular type. The rates of invasion deeper than submucosa in the granular type were as follows: 0% (0/20) in the homogenous granular type and 18% (8/44) in the nodule intermingled type. In the nodule intermingled type, when the nodule was more than, 11 mm in size, probability of deep invasion progressed with the size of nodule. But the nodule intermingled type with deep invasion did not show type Ⅴ pit pattern but showed various types including type Ⅳ or villous type. On the other hand, in the nongranular type, all lesions with type Ⅴ pit pattern were invasive cancer. As a result, type Ⅴ pit pattern of the colon tumor by magnifying endoscopic examination would suggest deep invasion except for the granular type of the laterally-spreading tumor.


Copyright © 1996, Igaku-Shoin Ltd. All rights reserved.

基本情報

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

関連文献

もっと見る

文献を共有