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Narrow band imaging under less-air condition improves the visibility of superficial esophageal squamous cell carcinoma

BACKGROUND: The current virtual chromoendoscopy equipment cannot completely detect superficial squamous cell carcinoma (SCC) in the esophagus, despite its development in the recent years. Thus, in this study, we aimed to elucidate the appropriate air volume during endoscopic observation to improve t...

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Autores principales: Iwatsubo, Taro, Ishihara, Ryu, Yamasaki, Yasushi, Tonai, Yusuke, Hamada, Kenta, Kato, Minoru, Suzuki, Sho, Kono, Mitsuhiro, Fukuda, Hiromu, Shimamoto, Yusaku, Nakagawa, Kentaro, Ohmori, Masayasu, Arao, Masamichi, Matsuno, Kenshi, Iwagami, Hiroyoshi, Inoue, Shuntaro, Nakahira, Hiroko, Matsuura, Noriko, Shichijo, Satoki, Maekawa, Akira, Kanesaka, Takashi, Takeuchi, Yoji, Higashino, Koji, Uedo, Noriya, Higuchi, Kazuhide
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7678292/
https://www.ncbi.nlm.nih.gov/pubmed/33213383
http://dx.doi.org/10.1186/s12876-020-01534-2
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author Iwatsubo, Taro
Ishihara, Ryu
Yamasaki, Yasushi
Tonai, Yusuke
Hamada, Kenta
Kato, Minoru
Suzuki, Sho
Kono, Mitsuhiro
Fukuda, Hiromu
Shimamoto, Yusaku
Nakagawa, Kentaro
Ohmori, Masayasu
Arao, Masamichi
Matsuno, Kenshi
Iwagami, Hiroyoshi
Inoue, Shuntaro
Nakahira, Hiroko
Matsuura, Noriko
Shichijo, Satoki
Maekawa, Akira
Kanesaka, Takashi
Takeuchi, Yoji
Higashino, Koji
Uedo, Noriya
Higuchi, Kazuhide
author_facet Iwatsubo, Taro
Ishihara, Ryu
Yamasaki, Yasushi
Tonai, Yusuke
Hamada, Kenta
Kato, Minoru
Suzuki, Sho
Kono, Mitsuhiro
Fukuda, Hiromu
Shimamoto, Yusaku
Nakagawa, Kentaro
Ohmori, Masayasu
Arao, Masamichi
Matsuno, Kenshi
Iwagami, Hiroyoshi
Inoue, Shuntaro
Nakahira, Hiroko
Matsuura, Noriko
Shichijo, Satoki
Maekawa, Akira
Kanesaka, Takashi
Takeuchi, Yoji
Higashino, Koji
Uedo, Noriya
Higuchi, Kazuhide
author_sort Iwatsubo, Taro
collection PubMed
description BACKGROUND: The current virtual chromoendoscopy equipment cannot completely detect superficial squamous cell carcinoma (SCC) in the esophagus, despite its development in the recent years. Thus, in this study, we aimed to elucidate the appropriate air volume during endoscopic observation to improve the visibility of esophageal SCC. METHODS: This retrospective study included a total of 101 flat type esophageal SCCs identified between April 2017 and January 2019 at the Department of Gastrointestinal Oncology, Osaka International Cancer Institute. Video images of narrow band imaging (NBI) under both less-air and standard-air conditions were recorded digitally. Videos were evaluated by five endoscopists. Relative visibility between less-air and standard-air conditions of the brownish area, brownish color change of the epithelium, and dilated intrapapillary capillary loop (IPCL) were graded as 5 (definitely better under less-air condition) to 1 (definitely worse under less-air condition), with 3 indicating average visibility (equivalent to standard-air observation). RESULTS: The mean (standard deviation) visibility score of the brownish area, brownish color change of the epithelium, and dilated IPCLs under less-air condition were 3.94 (0.58), 3.73 (0.57), and 4.13 (0.60), respectively, which were significantly better than that under standard-air condition (p < 0.0001). Esophageal SCC evaluated as ≥ 4 in the mean visibility score of the brownish area, brownish color change of the epithelium, and dilated IPCLs accounted for 50% (51/101 lesions), 34% (34/101 lesions), and 67% (68/101 lesions), respectively. CONCLUSIONS: The present results suggested that NBI with less air might improve the visibility of flat type esophageal SCC compared with NBI with standard air. Less-air NBI observation may facilitate the detection of flat type esophageal SCC. TRIAL REGISTRATION: The present study is a non-intervention trial.
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spelling pubmed-76782922020-11-20 Narrow band imaging under less-air condition improves the visibility of superficial esophageal squamous cell carcinoma Iwatsubo, Taro Ishihara, Ryu Yamasaki, Yasushi Tonai, Yusuke Hamada, Kenta Kato, Minoru Suzuki, Sho Kono, Mitsuhiro Fukuda, Hiromu Shimamoto, Yusaku Nakagawa, Kentaro Ohmori, Masayasu Arao, Masamichi Matsuno, Kenshi Iwagami, Hiroyoshi Inoue, Shuntaro Nakahira, Hiroko Matsuura, Noriko Shichijo, Satoki Maekawa, Akira Kanesaka, Takashi Takeuchi, Yoji Higashino, Koji Uedo, Noriya Higuchi, Kazuhide BMC Gastroenterol Research Article BACKGROUND: The current virtual chromoendoscopy equipment cannot completely detect superficial squamous cell carcinoma (SCC) in the esophagus, despite its development in the recent years. Thus, in this study, we aimed to elucidate the appropriate air volume during endoscopic observation to improve the visibility of esophageal SCC. METHODS: This retrospective study included a total of 101 flat type esophageal SCCs identified between April 2017 and January 2019 at the Department of Gastrointestinal Oncology, Osaka International Cancer Institute. Video images of narrow band imaging (NBI) under both less-air and standard-air conditions were recorded digitally. Videos were evaluated by five endoscopists. Relative visibility between less-air and standard-air conditions of the brownish area, brownish color change of the epithelium, and dilated intrapapillary capillary loop (IPCL) were graded as 5 (definitely better under less-air condition) to 1 (definitely worse under less-air condition), with 3 indicating average visibility (equivalent to standard-air observation). RESULTS: The mean (standard deviation) visibility score of the brownish area, brownish color change of the epithelium, and dilated IPCLs under less-air condition were 3.94 (0.58), 3.73 (0.57), and 4.13 (0.60), respectively, which were significantly better than that under standard-air condition (p < 0.0001). Esophageal SCC evaluated as ≥ 4 in the mean visibility score of the brownish area, brownish color change of the epithelium, and dilated IPCLs accounted for 50% (51/101 lesions), 34% (34/101 lesions), and 67% (68/101 lesions), respectively. CONCLUSIONS: The present results suggested that NBI with less air might improve the visibility of flat type esophageal SCC compared with NBI with standard air. Less-air NBI observation may facilitate the detection of flat type esophageal SCC. TRIAL REGISTRATION: The present study is a non-intervention trial. BioMed Central 2020-11-19 /pmc/articles/PMC7678292/ /pubmed/33213383 http://dx.doi.org/10.1186/s12876-020-01534-2 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research Article
Iwatsubo, Taro
Ishihara, Ryu
Yamasaki, Yasushi
Tonai, Yusuke
Hamada, Kenta
Kato, Minoru
Suzuki, Sho
Kono, Mitsuhiro
Fukuda, Hiromu
Shimamoto, Yusaku
Nakagawa, Kentaro
Ohmori, Masayasu
Arao, Masamichi
Matsuno, Kenshi
Iwagami, Hiroyoshi
Inoue, Shuntaro
Nakahira, Hiroko
Matsuura, Noriko
Shichijo, Satoki
Maekawa, Akira
Kanesaka, Takashi
Takeuchi, Yoji
Higashino, Koji
Uedo, Noriya
Higuchi, Kazuhide
Narrow band imaging under less-air condition improves the visibility of superficial esophageal squamous cell carcinoma
title Narrow band imaging under less-air condition improves the visibility of superficial esophageal squamous cell carcinoma
title_full Narrow band imaging under less-air condition improves the visibility of superficial esophageal squamous cell carcinoma
title_fullStr Narrow band imaging under less-air condition improves the visibility of superficial esophageal squamous cell carcinoma
title_full_unstemmed Narrow band imaging under less-air condition improves the visibility of superficial esophageal squamous cell carcinoma
title_short Narrow band imaging under less-air condition improves the visibility of superficial esophageal squamous cell carcinoma
title_sort narrow band imaging under less-air condition improves the visibility of superficial esophageal squamous cell carcinoma
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7678292/
https://www.ncbi.nlm.nih.gov/pubmed/33213383
http://dx.doi.org/10.1186/s12876-020-01534-2
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