Left atrial aneurysm

Last revised by Yuranga Weerakkody on 4 Dec 2022

Left arterial aneurysms refer to rare focal outpouchings arising from the left atrium. They can be congenital or acquired. Congenital left atrial aneurysms can be further divided into intra- and extra-pericardial types.

Clinical presentation

Patients may be asymptomatic or present with atrial tachyarrhythmias.


May lead to atrial tachyarrhythmia or thromboembolic events.

Treatment and prognosis

Resection and mitral valvuloplasty is often recommended as the treatment of choice. 

See also 

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