Key result
Surgical excision and pathological examination of an incidentally found right atrial mass in a 79-year-old man with atrial fibrillation revealed an organized thrombus mimicking a tumor.
Case Report (n=1)
Right atrial appendage thrombi can mimic tumors on imaging and should be considered in the differential diagnosis of right atrial masses, especially in patients with predisposing factors like atrial fibrillation.
Thrombus should be considered in right atrial mass differentials on imaging; this case report leaves open validation in larger cohorts.
A right atrial (RA) mass was incidentally found by transthoracic echocardiography in a 79-year-old man with atrial fibrillation rhythms but without a history of anticoagulation. Transesophageal echocardiography revealed a pedunculated immobile mass in the RA appendage. In addition, some calcification was detected in computed tomography. The mass was excised, and pathological examinations revealed organized thrombosis. Accordingly, in the presence of predisposing factors, thrombi, which may mimic some imaging features of tumors, should be considered in the differential diagnosis of RA masses.
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Hosseinsabet et al. (2020) conducted a case report in Right atrial appendage thrombus (n=1). Surgical excision was evaluated on Pathological diagnosis. Surgical excision and pathological examination of an incidentally found right atrial mass in a 79-year-old man with atrial fibrillation revealed an organized thrombus mimicking a tumor.
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