Key result
A massive left atrial myxoma prolapsing into the left ventricle and causing intermittent near-complete obstruction of the mitral orifice was identified as the rare cause of syncope in a 63-year-old male.
Why the study?
Cases of syncope caused by left atrial myxoma have been rarely documented.
Case Report (n=1)
No
This case highlights that a massive left atrial myxoma can rarely present as syncope due to transient mitral valve obstruction, underscoring the importance of echocardiography in syncope evaluation.
Answers are grounded in this paper and cite their sources.
Syncope may signal large left atrial myxoma; single case report leaves open need for prospective evaluation in unexplained syncope.
We report a rare case of a large left atrial myxoma that manifested as syncope in a patient who presented to the hospital following a syncopal episode. Our patient had a history of hypertension and anemia with reported two months of dyspnea on exertion. He was found to have a large left atrial myxoma. Atrial myxomas are the most common benign primary cardiac tumors. Patients may be asymptomatic or experience shortness of breath, palpitations, syncope, or sudden death. Cases of syncope caused by left atrial myxoma have been rarely documented. Our case report adds to the growing literature documenting this phenomenon. Larger observational studies are needed to properly define the incidence of left atrial myxoma causing syncope.
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Kurnick et al. (2023) conducted a case report in Left atrial myxoma (n=1). Left atrial myxoma was evaluated on Diagnosis of left atrial myxoma. A massive left atrial myxoma prolapsing into the left ventricle and causing intermittent near-complete obstruction of the mitral orifice was identified as the rare cause of syncope in a 63-year-old male.
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