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Atrial myxoma

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Atrial myxoma is the commonest primary cardiac tumour. It usually arises as a polypoid, gelatinous structure attached by a pedicle to the left atrium. Myxomas may arise less commonly in the right atrium or the ventricles.

General features include dyspnoea, syncope or a mild fever, and weight loss. Auscultation may reveal a mid-diastolic murmur produced by the tumour mass obstructing the valve orifice during ventricular filling.

Investigations show a raised ESR and characteristic echocardiography.

Untreated, the myxoma may result in thrombus formation and subsequent embolism, and permanent mitral valve obstruction.

Surgical removal is completely curative.


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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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