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Keimyung Medical Journal 2015;34(2):133-140.
Published online December 15, 2015.
A Case of Left Atrial Free-Floating Thrombus.
Dong Keun Kim, Jung Seok Kim, Ha Ram Yi, In Zoo Choi, Hyo Seung Ahn, Wook Hyun Cho
Department of Internal Medicine, Sam Yook Medical Center, Seoul, Korea. mulgang@gmail.com
Abstract
A 74-year-old woman who had paroxysmal atrial fibrillation without mitral stenosis was hospitalized for syncope and right-sided weakness. Echocardiography revealed a large free-floating thrombus in the left atrium, sometimes prolapsing partially into the left ventricle in diastole. Because of her poor neurological status, she was managed with anticoagulation. On the 12th day, the thrombus had disappeared on the follow-up echocardiography, and aortoiliac embolization was later detected on computed tomography. Unfortunately, she developed various complications of stroke and limb infarction, and died after 4 months of hospital care. In addition to this case report, we reviewed a total 70 cases of left atrial free-floating thrombus. Atrial fibrillation and mitral pathology were two major causative factors. All the cases, except 1, were confirmed on echocardiography. The most common presentation that led to echocardiography was systemic embolization, followed by heart failure. Others were acute hemodynamic decompensation from mitral obstruction, chest pain, palpitation, and bacteremia. Cardiac thrombectomy was the preferred treatment modality with favorable outcomes.
Key Words: Echocardiography, Free floating, Left atrium, Thrombus


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