ArticleEsophagus : official journal of the Japan Esophageal Society2019
Validation of new Japanese classification system for esophageal achalasia.
Article in Esophagus : official journal of the Japan Esophageal Society, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 7 citations in OpenAlex.
- Pull-down Heller myotomy improves the clinical outcome of advanced sigmoid achalasia.Surgical endoscopy · 2025Article
- Efficacy of laparoscopic cardiectomy combined with side overlap anastomosis for the treatment of terminal achalasia.Scientific reports · 2025Article
- Esophageal tortuosity in achalasia: increased length-to-height ratio predicts inferior symptom relief and esophageal emptying following myotomy.Surgical endoscopy · 2025Article
- Pathogenesis, clinical manifestations, diagnosis, and treatment progress of achalasia of cardia.World journal of clinical cases · 2023Review
- Quantification of Esophageal Angulation in Sigmoid Achalasia: Are We There Yet?Journal of neurogastroenterology and motility · 2020Article
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe 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
methodsFifty-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.
resultsThere 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.
conclusionThe 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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