{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T15:59:06Z","timestamp":1791215946225,"version":"4.1.0"},"reference-count":10,"publisher":"Oxford University Press (OUP)","issue":"10","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,9,30]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Atrial fibrillation (AF) is a prevalent and sustained arrhythmia in adults, with an estimated global prevalence of 37.5 million cases in 2017. While it primarily affects elderly individuals with structural heart disease (prevalence &amp;gt;10% after age 80), it can also occur in younger individuals, albeit with a much lower prevalence (&amp;lt;1% in those aged &amp;lt;40 years). Increasing knowledge about the pathophysiology of AF shows that in every patient, there may be an underlying cause, which, although it cannot be discovered in all patients, should be explored, especially in young patients without risk factors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case summary<\/jats:title>\n                    <jats:p>We present a case of paroxysmal AF (PAF) in a 37-year-old female patient with no cardiovascular risk factors. The PAF was likely associated with an atypically located thymic cyst over the left atrium, which was incidentally discovered during an intracardiac echocardiogram performed for pulmonary vein isolation. Subsequently, surgical cyst extraction was performed, resulting in improved episodes of AF.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion<\/jats:title>\n                    <jats:p>This case underscores the importance of considering uncommon anatomical variations when evaluating and managing AF. It also highlights the need for further research and understanding of non-valvular AF, particularly in cases associated with thymic abnormalities, to better inform clinical decision-making and enhance patient outcomes.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/ehjcr\/ytag129","type":"journal-article","created":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T12:41:34Z","timestamp":1772109694000},"source":"Crossref","is-referenced-by-count":0,"title":["Thymic cyst-induced left atrial compression associated with atrial fibrillation: a unique case report"],"prefix":"10.1093","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4664-9919","authenticated-orcid":false,"given":"Alex Sotomayor","family":"Julio","sequence":"first","affiliation":[{"name":"Servicio de Cardiolog\u00eda, Fundaci\u00f3n Valle del Lili , Carrera 98 #18-49, Cali 760032 ,","place":["Colombia"]},{"name":"Facultad de Ciencias de la Salud - Fellow Cardiolog\u00eda, Universidad Icesi , Calle 18 122 135, Cali, Valle 760031 ,","place":["Colombia"]},{"name":"Centro de Investigaciones Cl\u00ednicas, Fundaci\u00f3n Valle del Lili , Carrera 98 #18-49, Cali 760032 ,","place":["Colombia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2307-3670","authenticated-orcid":false,"given":"Mauricio","family":"Velasquez-Galvis","sequence":"additional","affiliation":[{"name":"Centro de Investigaciones Cl\u00ednicas, Fundaci\u00f3n Valle del Lili , Carrera 98 #18-49, Cali 760032 ,","place":["Colombia"]},{"name":"Departamento de Cirug\u00eda General \u2013 Servicio de Cirug\u00eda de T\u00f3rax, Fundaci\u00f3n Valle del Lili , Carrera 98 #18-49, Cali 760032 ,","place":["Colombia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9574-2370","authenticated-orcid":false,"given":"Luz","family":"Sua","sequence":"additional","affiliation":[{"name":"Centro de Investigaciones Cl\u00ednicas, Fundaci\u00f3n Valle del Lili , Carrera 98 #18-49, Cali 760032 ,","place":["Colombia"]},{"name":"Departamento de Patolog\u00eda y Medicina de Laboratorio, Fundaci\u00f3n Valle del Lili , Carrera 98 #18-49, Cali 760032 ,","place":["Colombia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5423-4847","authenticated-orcid":false,"given":"Carlos","family":"Vesga","sequence":"additional","affiliation":[{"name":"Servicio de Cardiolog\u00eda, Fundaci\u00f3n Valle del Lili , Carrera 98 #18-49, Cali 760032 ,","place":["Colombia"]},{"name":"Facultad de Ciencias de la Salud - Fellow Cardiolog\u00eda, Universidad Icesi , Calle 18 122 135, Cali, Valle 760031 ,","place":["Colombia"]},{"name":"Centro de Investigaciones Cl\u00ednicas, Fundaci\u00f3n Valle del Lili , Carrera 98 #18-49, Cali 760032 ,","place":["Colombia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pablo","family":"Perafan","sequence":"additional","affiliation":[{"name":"Servicio de Cardiolog\u00eda, Fundaci\u00f3n Valle del Lili , Carrera 98 #18-49, Cali 760032 ,","place":["Colombia"]},{"name":"Facultad de Ciencias de la Salud - Fellow Cardiolog\u00eda, Universidad Icesi , Calle 18 122 135, Cali, Valle 760031 ,","place":["Colombia"]},{"name":"Centro de Investigaciones Cl\u00ednicas, Fundaci\u00f3n Valle del Lili , Carrera 98 #18-49, Cali 760032 ,","place":["Colombia"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,2,27]]},"reference":[{"key":"2026100511441014200_ytag129-B1","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1177\/1747493019897870","article-title":"Global epidemiology of atrial fibrillation: an increasing epidemic and public health challenge","volume":"16","author":"Lippi","year":"2021","journal-title":"Int J Stroke"},{"key":"2026100511441014200_ytag129-B2","doi-asserted-by":"crossref","first-page":"213","DOI":"10.2147\/CLEP.S47385","article-title":"Epidemiology of atrial fibrillation: European perspective","volume":"6","author":"Zoni-Berisso","year":"2014","journal-title":"Clin Epidemiol"},{"key":"2026100511441014200_ytag129-B3","doi-asserted-by":"crossref","first-page":"489","DOI":"10.1080\/14779072.2018.1490644","article-title":"Atrial fibrillation in young patients","volume":"16","author":"Gourraud","year":"2018","journal-title":"Expert Rev Cardiovasc Ther"},{"key":"2026100511441014200_ytag129-B4","doi-asserted-by":"crossref","first-page":"1136","DOI":"10.1001\/jama.2013.842","article-title":"Long-term mortality after stroke among adults aged 18 to 50 years","volume":"309","author":"Rutten-Jacobs","year":"2013","journal-title":"JAMA"},{"key":"2026100511441014200_ytag129-B5","author":"Arbelo"},{"key":"2026100511441014200_ytag129-B6","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1093\/europace\/euw378","article-title":"Catheter ablation of atrial fibrillation in very young adults: a 5-year follow-up study","volume":"20","author":"Saguner","year":"2018","journal-title":"Europace"},{"key":"2026100511441014200_ytag129-B7","doi-asserted-by":"crossref","first-page":"308","DOI":"10.1510\/icvts.2010.253039","article-title":"Giant mediastinal teratoma presenting with paroxysmal atrial fibrillation","volume":"12","author":"Asteriou","year":"2011","journal-title":"Interact Cardiovasc Thorac Surg"},{"key":"2026100511441014200_ytag129-B8","doi-asserted-by":"crossref","DOI":"10.1136\/bcr-2016-216710","article-title":"Rare cause of atrial fibrillation: a thymic mass","author":"Vishwanathan","year":"2016","journal-title":"BMJ Case Reports CP"},{"key":"2026100511441014200_ytag129-B9","first-page":"404","article-title":"Posterior mediastinal Thymus: case report and literature review","volume":"21","author":"Jiang","year":"2011","journal-title":"Iran J Pediatr"},{"key":"2026100511441014200_ytag129-B10","doi-asserted-by":"crossref","first-page":"473","DOI":"10.1016\/j.hrthm.2011.11.013","article-title":"Long-term effects of catheter ablation for lone atrial fibrillation: progressive atrial electroanatomic substrate remodeling despite successful ablation","volume":"9","author":"Teh","year":"2012","journal-title":"Heart Rhythm"}],"container-title":["European Heart Journal - 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