%0 Journal Article %T Cardiac Myxoma Arising From the Superior Vena Cava: A Case Report %J Iranian Heart Journal %I Iranian Heart Association %Z %A Salehi, Rezvanieh %A Chenaghlou, Maryam %A Mohamadi, Asghar %A Javanshir, Elnaz %D 2022 %\ 07/01/2022 %V 23 %N 3 %P 131-134 %! Cardiac Myxoma Arising From the Superior Vena Cava: A Case Report %K Myxoma %K SVC %K CARDIAC TUMOR %R %X Myxomas, though uncommon in the general population, comprise the most common cardiac tumors. The majority of these tumors are located in the left atrium (75%), followed by the right atrium (20%), the right ventricle (8%), and the left ventricle (3%–4%). Less common forms involve all cardiac chambers, pulmonary vessels, and mitral and aortic valves. Cardiac myxomas arising from the superior vena cava (SVC) constitute an extremely rare presentation of these tumors. The involvement of the SVC in cardiac myxomas is generally secondary to expansion from the right atrium; nonetheless, an SVC origin with the secondary involvement of the right atrium is extremely rare. Herein, we describe a young man presenting with syncope. Further evaluations revealed a mass originating from the SVC with myxoma pathology. (Iranian Heart Journal 2022; 23(3): 131-134) %U http://journal.iha.org.ir/article_152641_12924569cf21db84783142170e43453e.pdf