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The Efficient Way to Use NBI and BLI in the Pharyngeal and Esophageal Areas Ippei Tanaka 1 , Dai Hirasawa 1 , Kimihiro Igarashi 1 , Yoshitaka Nawata 1 , Satoshi Ito 1 , Junichi Akahira 2 , Fumiyoshi Fujishima 3 , Tomoki Matsuda 1 1Department of Gastroenterology, Sendai Kousei Hospital, Sendai, Japan 2Department of Pathology and Laboratory, Sendai Kousei Hospital, Sendai, Japan 3Department of Pathology, Tohoku University Hospital, Sendai, Japan Keyword: IEE観察 , NBI , BLI , 食道表在癌 , 食道扁平上皮癌 pp.1627-1636
Published Date 2022/12/25
DOI https://doi.org/10.11477/mf.1403203066
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 One of the most important endoscopic observation methods is IEE(image enhanced endoscopy), which includes NBI(narrow band imaging)and blue laser imaging. Many previous studies have demonstrated the utility of IEE, beginning with Muto et al. paper, which showed that NBI improves the detection rate of superficial cancers of the pharynx and esophagus. Based on the previous studies, we explain the utility of IEE observation for screening, differential diagnosis, and diagnosis of invasion depth of lesions in the pharyngeal and esophageal areas in this paper. Furthermore, we scored and evaluated the visibility of superficial esophageal carcinoma using WLI(white light imaging), NBI, and iodine staining. When iodine staining was used instead of WLI or NBI, the visibility of superficial esophageal carcinoma was significantly improved. However, lesions arising in the esophagus showing multiple iodine voiding lesions after iodine staining, including carcinoma with the superficial layer containing glycogen granules, may be more visible with NBI than with iodine, emphasizing the importance of a comprehensive diagnosis using multiple modalities.


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

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