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In evaluating a 69\u2010year\u2010old man with dyspnea, mitral stenosis was identified on transthoracic echocardiography. Subsequently, during transesophageal echocardiography, a mediastinal mass in the posterior mediastinum was observed. The computed tomography scan confirmed the transesophageal echocardiography findings and suggested that lymphoma and metastatic malignancy should be considered in the differential diagnosis.<\/jats:p>","DOI":"10.1002\/ccr3.72558","type":"journal-article","created":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T05:08:36Z","timestamp":1776402516000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Incidentally Detected Mediastinal Mass by Transesophageal Echocardiography in a Patient With Severe Mitral Stenosis"],"prefix":"10.1002","volume":"14","author":[{"given":"Najmeh\u2010Sadat","family":"Mousavi","sequence":"first","affiliation":[{"name":"Radiology Department, Tehran Heart Center, School of Medicine Tehran University of Medical Sciences  Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2927-3742","authenticated-orcid":false,"given":"Ali","family":"Hosseinsabet","sequence":"additional","affiliation":[{"name":"Cardiology Department, Tehran Heart Center, School of Medicine Tehran University of Medical Sciences  Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shapour","family":"Shirani","sequence":"additional","affiliation":[{"name":"Radiology Department, Tehran Heart Center, School of Medicine Tehran University of Medical Sciences  Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hassan","family":"Aghjani","sequence":"additional","affiliation":[{"name":"Cardiology Department, Tehran Heart Center, School of Medicine Tehran University of Medical Sciences  Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,4,16]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.17305\/bb.2024.10847"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.4103\/0366-6999.155083"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1136\/bcr-2016-216710"},{"key":"e_1_2_11_5_1","article-title":"Giant Right Coronary Artery Aneurysm Incidentally Found During Stroke Evaluation Through Echocardiography","volume":"16","author":"Gonzalez J. 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