INTESTINE Vol.12 No.4(2-5)

特集名 NBI/FICEとpit pattern
題名 NBI/FICE拡大観察によるpit pattern診断 (5) NBIによる大腸病変の発見・診断と今後の展望
発刊年月 2008年 07月
著者 池松 弘朗 国立がんセンター東病院内視鏡部消化器科
著者 金子 和弘 国立がんセンター東病院内視鏡部消化器科
著者 佐野 寧 薫風会佐野病院消化器センター
【 要旨 】 要旨はありません。
Theme Narrow Band Imaging (NBI) / Fuji Intelligent Color Enhancement (FICE) and pit pattern in colon and rectum
Title Efficacy of capillary pattern classification using NBI magnification for diagnosis of colorectal lesions
Author Hiroaki Ikematsu Division of Endoscopy & Gastrointestinal Oncology, National Cancer Center Hospital East
Author Kazuhiro Kaneko Division of Endoscopy & Gastrointestinal Oncology, National Cancer Center Hospital East
Author Yasushi Sano Department of Gastrointestinal Center, Sano Hospital
[ Summary ] The observance of the surface structure of crypts using magnifying chromoendoscopy, through pit pattern classification, has previously been reported to be useful in diagnosing colorectal lesions accurately. In contrast, observation of micro-capillary (MC) vessels using Narrow Band Imaging (NBI) magnification, which requires no application of a dye solution, is also useful to diagnose colorectal lesions. Employing NBI magnification, CP was classified into the following three groups in relation to MC vessels, (1) CP type I : lesions without MC vessels, (2) CP type II : lesions with MC vessels, (3) CP type III : lesions with MC vessels which have lost demarcating formations around crypts, exhibiting complicated winding, stopped and branching irregularly. Furthermore, CP type III was sub-categorized into III A and III B in order to distinguish lesions which have infiltrated into deeper submucosal layers (1,000 μm ≤). The CP type III B was defined as those lesions in which the density of MC vessels is loose in NBI magnifying observation. NBI was the most reliable method to distinguish between non-neoplastic and neoplastic lesions. In contrast, the diagnostic ability of NBI magnifying observation of lesions infiltrating into deeper submucosal layers was inferior in terms of diagnosing pit patterns with dye solution.