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The primary risk factors for bleeding peptic ulcers are Helicobacter pylori infection and non-steroidal anti-inflammatory drugs. The association between acute gastric\/duodenal ulcer and opium use has been previously proposed; however, there is no available data on endoscopic findings of patients with acute UGIB who use opium.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Materials and methods<\/jats:title>\n                <jats:p>In the present descriptive cross-sectional study, endoscopic data of 50 consecutive patients with oral opium use and 50 consecutive patients without any opium use who were admitted for UGIB were recorded. The size (5\u201310\u00a0mm, 11\u201320\u00a0mm, or more than 20\u00a0mm), number (single, double, or multiple), and location of the ulcers (esophagus, gastric corpus including the fundus and body, antrum, angulus, or duodenum) were examined by endoscopy in both groups.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Three or more ulcers were observed in 46% and 16% of patients with oral opium use and without opium use, respectively (<jats:italic>P<\/jats:italic>-value\u2009=\u20090.001). The rate of giant ulcers (&gt;\u200920\u00a0mm) was significantly higher in patients who used oral opium (40% vs. 12%; <jats:italic>P<\/jats:italic>-value\u2009=\u20090.007). Esophageal ulcers were also more common in oral opium users (30%) than non-users (8%) with UGIB (<jats:italic>P<\/jats:italic>-value\u2009=\u20090.01). Nevertheless, the location of the ulcers between the two groups generally was not statistically different.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>This study has demonstrated that multiple, large peptic ulcers in GIB are potential complications of oral opium use. This could aid the needed modifications in the treatment protocol for these patients.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12876-024-03137-7","type":"journal-article","created":{"date-parts":[[2024,1,22]],"date-time":"2024-01-22T09:02:23Z","timestamp":1705914143000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Peptic ulcer characteristics in oral opium and non-opium user patients with upper gastrointestinal bleeding"],"prefix":"10.1186","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8471-9220","authenticated-orcid":false,"given":"Mohsen","family":"Masoodi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohammad","family":"Sabzikarian","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nikta","family":"Masoodi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Saeed","family":"Farhadi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gholam Reza","family":"Rezamand","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seidamir Pasha","family":"Tabaeian","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Atefeh","family":"Talebi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Farimah","family":"Fayyaz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,1,22]]},"reference":[{"issue":"4","key":"3137_CR1","first-page":"193","volume":"4","author":"M Masoodi","year":"2012","unstructured":"Masoodi M, Saberifiroozi M. 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