Synonyms: Dilatation of the left atrial appendage | Dilatation of the left auricle | Ectasia of the left auricle
Ectasia of the left atrial appendage is a rare cardiac malformation characterized by the enlargement of the left auricle without any other associated cardiac lesions. It can be asymptomatic (discovered fortuitously during routine chest imaging as an unusual cardiac shadow) or present clinically with supraventricular tachyarrhythmia paroxysmal tachycardia embolic events respiratory distress chest pain angina pectoris or heart failure.
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview. Reference: Access aggregated data from Orphanet at Orphadata. Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version April 2026
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Ectasia of the left atrial appendage?
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Advocacy Organizations
Heart of a Giant Foundation
The mission of the HGF is to achieve better health outcomes for heart diseases and related chronic health conditions in our communities and enhance the quality of life through health education, care support, and connection to community resources.
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Clinical Trials
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