Öztürk, ŞeymaBoran, Çetin2024-09-252024-09-2520231306-7656https://doi.org/10.5336/cardiosci.2023-98070https://search.trdizin.gov.tr/tr/yayin/detay/1258815https://hdl.handle.net/20.500.12491/12685Leiomyosarcoma is a mesenchymal tumor originating from smooth muscle cells and constitutes a small proportion of the primary cardiac tumors. The tumor usually tends to settle on the left side of the heart and infiltrates the pulmonary veins, causing chest pain, dyspnea, and heart failure. Since primary cardiac leiomyosarcoma is a rare entity, it is difficult to distinguish clinically from myxoma, which is the most common benign tumor of the heart. Therefore, histopathological examination is necessary. The prognosis is poor due to the high rate of postoperative recurrence and distant metastasis. In this study, a case of primary cardiac leiomyosarcoma originating from the right atrium in a 59-year-old female patient is presented. Copyright © 2023 by Türkiye Klinikleri.eninfo:eu-repo/semantics/openAccessdifferential diagnosisLeiomyosarcomamyxomaprognosisright atriumArticle10.5336/cardiosci.2023-9807035269722-s2.0-85175545153Q41258815