{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T00:21:52Z","timestamp":1782951712426,"version":"3.54.5"},"reference-count":18,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2021,5,17]],"date-time":"2021-05-17T00:00:00Z","timestamp":1621209600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2021,5,17]],"date-time":"2021-05-17T00:00:00Z","timestamp":1621209600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Gastroenterol"],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Background<\/jats:title>\n                <jats:p>Jackhammer esophagus is a rare esophageal motility disorder that can result in dysphagia, chest pain, and gastro-esophageal reflux symptoms. High-resolution manometry is the gold standard for diagnosis, while corkscrew esophagus on upper gastrointestinal endoscopy is an uncommon manifestation.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Case presentation<\/jats:title>\n                <jats:p>72-year-old man who presented with progressive dysphagia for three months without symptoms of chest pain or heartburn. Initial workup showed a corkscrew esophagus on upper gastrointestinal endoscopy; subsequently, high-resolution manometry revealed an esophago-gastric junction outflow obstruction with hypercontractile (jackhammer) esophagus. Treatment with calcium channel blockers and proton pump inhibitors was successful and relieved his symptoms near completion.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Even though the corkscrew esophagus is typically for distal esophageal spasm, the hypercontractile (jackhammer) esophagus can appear. The high-resolution manometry can help to distinguish each specific motility disorder.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12876-021-01808-3","type":"journal-article","created":{"date-parts":[[2021,5,17]],"date-time":"2021-05-17T21:02:40Z","timestamp":1621285360000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Manometrically jackhammer esophagus with fluoroscopically\/endoscopically distal esophageal spasm: a case report"],"prefix":"10.1186","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6628-2977","authenticated-orcid":false,"given":"Apichet","family":"Sirinawasatien","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pallop","family":"Sakulthongthawin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,5,17]]},"reference":[{"issue":"8","key":"1808_CR1","doi-asserted-by":"publisher","first-page":"615","DOI":"10.1097\/MCG.0000000000000496","volume":"50","author":"Y Jia","year":"2016","unstructured":"Jia Y, Arenas J, Hejazi RA, Elhanafi S, Saadi M, McCallum RW. 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