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A 52\u2010year\u2010old female presenting with acute ischemic stroke was found on echocardiography to have a thin\u2010walled, mobile, 1.2\u2009\u00d7\u20092.4\u2009cm cystic mass on the posterior mitral leaflet, along with hypertrophic obstructive cardiomyopathy. Although transesophageal echocardiography detected the mass, differentiating it from solid tumors or caseous calcifications remained challenging. Noncontrast cardiac magnetic resonance imaging showed that the cyst's internal signal was isointense with the left ventricular blood pool throughout the cardiac cycle. This distinct dynamic signature definitively ruled out solid neoplasms and caseous mitral annular calcification, confirming a blood\u2010filled cavity.<\/jats:p>","DOI":"10.1002\/jcu.70373","type":"journal-article","created":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T03:42:04Z","timestamp":1786333324000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Beyond Echocardiography: Multimodality Imaging of a Mitral Valve Blood Cyst in Cryptogenic Stroke"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9511-5825","authenticated-orcid":false,"given":"Muhammed Emre","family":"G\u00fcle\u015fir","sequence":"first","affiliation":[{"name":"Department of Cardiology, Faculty of Medicine Bolu Abant Izzet Baysal University  Bolu Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-9579-4981","authenticated-orcid":false,"given":"Berkay","family":"Topal","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Faculty of Medicine Bolu Abant Izzet Baysal University  Bolu Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-1606-0130","authenticated-orcid":false,"given":"Umut Ata","family":"U\u011fra\u015f","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Surgery, Faculty of Medicine Bolu Abant Izzet Baysal University  Bolu Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-2403-7475","authenticated-orcid":false,"given":"Ertu\u011frul","family":"Ar\u0131ba\u015f","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Faculty of Medicine Bolu Abant Izzet Baysal University  Bolu Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3817-851X","authenticated-orcid":false,"given":"Y\u0131lmaz","family":"G\u00fcne\u015f","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Faculty of Medicine Bolu Abant Izzet Baysal University  Bolu Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,8,9]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jaccas.2026.106857"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.case.2021.01.004"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jacc.2022.01.011"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.shj.2022.100154"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jaccas.2020.09.039"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.103.22.2687"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jaccao.2020.05.009"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.3389\/fcvm.2023.1233926"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0046\u20108177(83)80142\u20107"}],"container-title":["Journal of Clinical Ultrasound"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jcu.70373","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/jcu.70373","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jcu.70373","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T03:42:05Z","timestamp":1786333325000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jcu.70373"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8,9]]},"references-count":9,"alternative-id":["10.1002\/jcu.70373"],"URL":"https:\/\/doi.org\/10.1002\/jcu.70373","archive":["Portico"],"relation":{},"ISSN":["0091-2751","1097-0096"],"issn-type":[{"value":"0091-2751","type":"print"},{"value":"1097-0096","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,8,9]]},"assertion":[{"value":"2026-05-22","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-08-04","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-08-09","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"jcu.70373"}}