Left Atrial Myxoma Masquerading as Pulmonary Embolism on Electrocardiogram: A Case Report

Anton Mararenko, Ndausung Udongwo, Dhaval Desai, Matthew S. Schoenfeld

Abstract


Primary cardiac tumors are an incredibly rare finding. Cardiac myxomas are the most primary cardiac tumors that often occur within the left atrium. When left untreated, they pose a high risk of causing hemodynamic collapse by obstruction or can embolize and result in thromboembolic stroke. The presentation of cardiac myxoma varies greatly and can be associated with significant morbidity and mortality when undiagnosed. A careful physical examination and high degree of suspicion is crucial in early diagnosis and intervention. Our team presents a 46-year-old female patient with no significant past medical history that presented to the emergency department with a neurological deficit that was concerning for a transient ischemic attack. Initial laboratory workup and electrocardiogram was suggestive for pulmonary embolism; however, upon evaluation with imaging, the patient was found to have a 1.6 × 3.4 cm mass fixed to the mitral leaflet that was then confirmed on transthoracic echocardiography. Our patient was found to have non-obstructive coronary artery disease on cardiac catheterization and ultimately underwent successful mass resection by cardiothoracic surgery.




J Med Cases. 2021;12(12):511-515
doi: https://doi.org/10.14740/jmc3775

Keywords


Atrial myxoma; Pulmonary embolism; Benign cardiac tumor; Thromboembolic infarct

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