{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T17:53:26Z","timestamp":1785261206635,"version":"3.55.0"},"reference-count":23,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2019,7,22]],"date-time":"2019-07-22T00:00:00Z","timestamp":1563753600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Digestive Endoscopy"],"published-print":{"date-parts":[[2020,3]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>The clinical success of per\u2010oral endoscopic myotomy (<jats:styled-content style=\"fixed-case\">POEM<\/jats:styled-content>) has led to the development of a new field of \u2018submucosal endoscopy\u2019. This study aimed to evaluate the safety, efficacy, and limitations of per\u2010oral endoscopic tumor resection (<jats:styled-content style=\"fixed-case\">POET<\/jats:styled-content>) in the management of submucosal tumors (<jats:styled-content style=\"fixed-case\">SMT<\/jats:styled-content>s) in the esophagus and the gastric cardia.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p><jats:styled-content style=\"fixed-case\">POET<\/jats:styled-content> was performed in 47 patients from January 2011 to December 2017. The indication for <jats:styled-content style=\"fixed-case\">POET<\/jats:styled-content> was <jats:styled-content style=\"fixed-case\">SMT<\/jats:styled-content>s\u00a0\u2264\u00a030\u00a0mm in minor axis diameter. Patient and tumor characteristics (age, gender, tumor location, size, and histology), operative and clinical results of <jats:styled-content style=\"fixed-case\">POET<\/jats:styled-content> (procedure time and completion rate, en bloc resection rate, length of hospitalization, adverse events and tumor recurrence) were analyzed retrospectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p><jats:styled-content style=\"fixed-case\">POET<\/jats:styled-content> was successfully completed in 43 patients (91.5%) without any major adverse events (Clavien\u2010Dindo <jats:styled-content style=\"fixed-case\">III<\/jats:styled-content>b\u2010<jats:styled-content style=\"fixed-case\">IV<\/jats:styled-content>). Four patients required conversion to an open surgical procedure due to suboptimal visualization during <jats:styled-content style=\"fixed-case\">POET<\/jats:styled-content>. Four patients underwent piecemeal resection of their <jats:styled-content style=\"fixed-case\">SMT<\/jats:styled-content>s including <jats:styled-content style=\"fixed-case\">GIST<\/jats:styled-content>s. Median follow\u2010up was 44\u00a0months (10\u201396\u00a0months), during that time, there were no incidences of tumor recurrence. Tumors that had a minor axis diameter\u00a0&gt;\u00a030\u00a0mm or a tumor mass index (<jats:styled-content style=\"fixed-case\">TMI<\/jats:styled-content>) [major axis diameter (mm)\u00a0\u00d7\u00a0minor axis diameter (mm)] &gt;1000 had a high likelihood of being converted to surgical resection.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p><jats:styled-content style=\"fixed-case\">POET<\/jats:styled-content> is a safe and effective treatment for <jats:styled-content style=\"fixed-case\">SMT<\/jats:styled-content>s. However, in patients where the minor axis diameter is\u00a0&gt;\u00a030\u00a0mm or the <jats:styled-content style=\"fixed-case\">TMI<\/jats:styled-content>\u00a0&gt;\u00a01000, surgical excision should be considered. Furthermore, application of <jats:styled-content style=\"fixed-case\">POET<\/jats:styled-content> for <jats:styled-content style=\"fixed-case\">SMT<\/jats:styled-content>s with malignant potential should be carefully considered to ensure optimal oncologic outcomes.<\/jats:p><\/jats:sec>","DOI":"10.1111\/den.13471","type":"journal-article","created":{"date-parts":[[2019,6,25]],"date-time":"2019-06-25T17:56:21Z","timestamp":1561485381000},"page":"328-336","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":48,"title":["Clinical outcomes of per\u2010oral endoscopic tumor resection for submucosal tumors in the esophagus and gastric cardia"],"prefix":"10.1111","volume":"32","author":[{"given":"Manabu","family":"Onimaru","sequence":"first","affiliation":[{"name":"Digestive Diseases Center Showa University Koto Toyosu Hospital Tokyo 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