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Validation of new Japanese classification system for esophageal achalasia

BACKGROUND: The fourth edition of New Japanese classification system for esophageal achalasia was revised after a long interval of 30 years in 2012. In this new system, achalasia is morphologically classified into 3 types, based on its X-ray findings. However, the system has been limitedly used in J...

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Autores principales: Kato, Ryo, Nakajima, Kiyokazu, Takahashi, Tsuyoshi, Tanaka, Koji, Miyazaki, Yasuhiro, Makino, Tomoki, Kurokawa, Yukinori, Yamasaki, Makoto, Mori, Masaki, Doki, Yuichiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Singapore 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6592958/
https://www.ncbi.nlm.nih.gov/pubmed/30771041
http://dx.doi.org/10.1007/s10388-019-00658-z
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author Kato, Ryo
Nakajima, Kiyokazu
Takahashi, Tsuyoshi
Tanaka, Koji
Miyazaki, Yasuhiro
Makino, Tomoki
Kurokawa, Yukinori
Yamasaki, Makoto
Mori, Masaki
Doki, Yuichiro
author_facet Kato, Ryo
Nakajima, Kiyokazu
Takahashi, Tsuyoshi
Tanaka, Koji
Miyazaki, Yasuhiro
Makino, Tomoki
Kurokawa, Yukinori
Yamasaki, Makoto
Mori, Masaki
Doki, Yuichiro
author_sort Kato, Ryo
collection PubMed
description BACKGROUND: The fourth edition of New Japanese classification system for esophageal achalasia was revised after a long interval of 30 years in 2012. In this new system, achalasia is morphologically classified into 3 types, based on its X-ray findings. However, the system has been limitedly used in Japan and has not been fully validated in terms of its predictive capability of postoperative outcomes. The purpose of this study was to clarify the validity of new Japanese classification system for esophageal achalasia, as an index of patient characteristics and as a predictor of operative and mid/long-term postoperative outcomes. PATIENTS AND METHODS: Fifty-nine cases of achalasia underwent laparoscopic Heller–Dor surgery between 2005 and 2018. We evaluated retrospectively patient characteristics, intraoperative findings, esophageal manometry, 24-h pH monitoring and postoperative course. RESULTS: There were 34 St and 25 Sg/aSg cases. Age of St group was lower than Sg group. Preoperative duration of disease of St group was shorter than Sg. There were no differences in the results of surgical outcomes and prognoses. CONCLUSION: The new Japanese classification system may give additional insight and information in understanding epidemiology of esophageal achalasia; however, our study failed to demonstrate “inter-disease type” differences in surgical outcomes and prognoses.
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spelling pubmed-65929582019-07-11 Validation of new Japanese classification system for esophageal achalasia Kato, Ryo Nakajima, Kiyokazu Takahashi, Tsuyoshi Tanaka, Koji Miyazaki, Yasuhiro Makino, Tomoki Kurokawa, Yukinori Yamasaki, Makoto Mori, Masaki Doki, Yuichiro Esophagus Original Article BACKGROUND: The fourth edition of New Japanese classification system for esophageal achalasia was revised after a long interval of 30 years in 2012. In this new system, achalasia is morphologically classified into 3 types, based on its X-ray findings. However, the system has been limitedly used in Japan and has not been fully validated in terms of its predictive capability of postoperative outcomes. The purpose of this study was to clarify the validity of new Japanese classification system for esophageal achalasia, as an index of patient characteristics and as a predictor of operative and mid/long-term postoperative outcomes. PATIENTS AND METHODS: Fifty-nine cases of achalasia underwent laparoscopic Heller–Dor surgery between 2005 and 2018. We evaluated retrospectively patient characteristics, intraoperative findings, esophageal manometry, 24-h pH monitoring and postoperative course. RESULTS: There were 34 St and 25 Sg/aSg cases. Age of St group was lower than Sg group. Preoperative duration of disease of St group was shorter than Sg. There were no differences in the results of surgical outcomes and prognoses. CONCLUSION: The new Japanese classification system may give additional insight and information in understanding epidemiology of esophageal achalasia; however, our study failed to demonstrate “inter-disease type” differences in surgical outcomes and prognoses. Springer Singapore 2019-02-15 2019 /pmc/articles/PMC6592958/ /pubmed/30771041 http://dx.doi.org/10.1007/s10388-019-00658-z Text en © The Author(s) 2019 OpenAccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Original Article
Kato, Ryo
Nakajima, Kiyokazu
Takahashi, Tsuyoshi
Tanaka, Koji
Miyazaki, Yasuhiro
Makino, Tomoki
Kurokawa, Yukinori
Yamasaki, Makoto
Mori, Masaki
Doki, Yuichiro
Validation of new Japanese classification system for esophageal achalasia
title Validation of new Japanese classification system for esophageal achalasia
title_full Validation of new Japanese classification system for esophageal achalasia
title_fullStr Validation of new Japanese classification system for esophageal achalasia
title_full_unstemmed Validation of new Japanese classification system for esophageal achalasia
title_short Validation of new Japanese classification system for esophageal achalasia
title_sort validation of new japanese classification system for esophageal achalasia
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6592958/
https://www.ncbi.nlm.nih.gov/pubmed/30771041
http://dx.doi.org/10.1007/s10388-019-00658-z
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