Left atrial appendage... and another appendage?
Owais, Khurram, Mario Montealegre-Gallegos, Robina Matyal, Anam Pal, and Feroze Mahmood. 2015. “Left Atrial Appendage. And Another Appendage?”. Journal of Cardiothoracic and Vascular Anesthesia 29 (1): 248-9.