Conclusion
In conclusion, LAAA is a rare cardiac anomaly. TTE is the primary tool
to detect LAAA. TEE, CT and MRI can be used for further examination.
When a saccular structure adjacent to the left heart border is
encountered, LAAA should be considered. Once LAAA is diagnosed, early
intervention is recommended to prevent life-threatening complications,
even in asymptomatic patients. As seen in our case, the use of the
cardiopulmonary bypass via median sternotomy is an accepted approach,
generally believed safe and successful.