Introduction
Left atrial appendage aneurysm (LAAA) is an extremely rare cardiac
abnormality, which may lead to fatal complications such as thrombotic
events, atrial fibrillation, and cardiac function deterioration. Robust
evidence recommends surgical correction for patients who were diagnosed
with LAAA even without any symptoms1. In this case, we
reported an 18-year-old female who suffered from a giant congenital LAAA
but without any symptoms, which was incidental detected
echocardiography.