Accessory left atrial appendage

Dr Owen Kang and Dr Maxime St-Amant et al.

An accessory left atrial appendage is a frequent fortuitous finding in cardiac imaging, encountered in ~10% of patients. They are more often seen as a small diverticular structure projecting from the right upper side of the left atrial wall.

Differential diagnosis

Anatomy: Thoracic
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Article information

rID: 23957
System: Cardiac
Section: Anatomy
Synonyms or Alternate Spellings:
  • Accessory left atrial appendages

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