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Course: A Woman With Recurrent Syncope and Malar Flush in the Setting of a Left Atrial Echogenic Mass

CME Credits: 1.00

Released: 2023-04-26

A middle-aged woman was admitted to the hospital due to syncope. According to results of the auscultation, the woman was initially diagnosed as having mitral stenosis after detection of a mid-diastolic, low-pitched, rumbling murmur and an audible opening snap at the apex. The patient also exhibited malar flush, which is a common skin manifestation in patients with mitral stenosis; this finding further supported our diagnosis (, A). However, an echogenic mass, measuring 32 × 28 mm (, B), was detected in the left atrium by transthoracic echocardiography. The mass was connected to the intertribal septum via a short flap, prolapsing across the mitral valve into the left ventricle and causing transient obstruction of blood flow (). The opening snap and diastolic murmur were actually the result of movement of the myxomatous tumor and obstruction of the valve, respectively. The patient was then referred for surgical resection. Pathology confirmed a diagnosis of myxoma.


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