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A case of tricuspid valvular nonbacterial thrombotic endocarditis associated with advanced ovarian cancer

      Abstract

      Nonbacterial thrombotic endocarditis (NBTE) is characterized by the deposition of thrombi on the heart valves without bacteremia and predominantly affects patients with hypercoagulable state. Since the lesion of NBTE often exists in the left-sided valves, involvement of the tricuspid valve (TV) is rare. We herein report a 34-year-old woman with advanced ovarian cancer and pulmonary embolization showing NBTE on the TV. Plasma D-dimer level was markedly elevated and echocardiography showed highly mobile masses on the TV with moderate to severe regurgitation. After the initiation of heparin therapy, reduction of plasma D-dimer levels along with shrinkage of the TV vegetations was observed. However, she was forced to discontinue the heparin because its supply was interrupted in association with coronavirus disease 2019. Coupled with systemic metastasis of ovarian cancer, elevated plasma D-dimer level and exacerbation of NBTE were observed. Thereafter, she resumed subcutaneous injection of heparin, resulting in re-improvement.

      Learning objective

      Involvement of tricuspid valve (TV) by nonbacterial thrombotic endocarditis (NBTE) is rare, especially when they are associated with advanced cancer. Our case underlines the importance of listing the NBTE as a differential diagnosis in cancer patients showing valve vegetations even in the TV.

      Abbreviations:

      NBTE (Nonbacterial thrombotic endocarditis), TV (Tricuspid valve), TR (Tricuspid regurgitation)

      Keywords

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