High-magnification Endoscopic Diagnosis of the Meso- and Hypopharyngeal Cancer Haruhiro Inoue 1 , Hitomi Minami 1 , Yoshitaka Sato 1 , Makoto Kaga 1 , Akira Yokoyama 1 , Michitaka Suzuki 1 , Hitoshi Satodate 1 , Noriko Odaka 1 , Hiroaki Itoh 1 , Shin-ei Kudo 1 1Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Japan Keyword: 中・下咽頭癌 , IPCL , NBI , スクリーニング , IPCLパターン分類 pp.217-226
Published Date 2010/2/25
DOI https://doi.org/10.11477/mf.1403101852
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 When we perform endoscopic screening in the upper GI tract, superficial cancer in the middle and hypopharynx can also be detected. It is impossible to spray iodine solution in the pharynx because of its irritating effect on the larynx, and therefore NBI(narrow band imaging)image-enahanced endoscopy becomes a key tool for identifying flat lesions in the pharynx. After detecting a brownish area in the pharynx, NBI magnifying observation facilitates the evaluation of IPCL(intraepithelial papillary capillary loop)pattern changes. Histologically, lesions in the pharynx muscularis mucosae become hard to identify, but normal superficial vascular network pattern in the pharynx is generally similar to that in the esophagus. In order to make a diagnosis of superficial lesions in the pharynx, IPCL pattern classification in the esophagus can be applied also to pharyngeal lesions.

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