Figure 1.

Photo of the Specimen and Resection Bed

(Left panel) Excised specimen. The tumor was grossly adherent to the adjacent left atrial (LA) surfaces including the LA roof, posterior LA wall, and right pulmonary vein (PV) antrum. Blue indicates the interatrial septum (IAS) surface. Green indicates the posterior LA wall surface; Purple indicates the right PV antrum surface. Yellow indicates the mitral valve surface. (Right panel) Resection bed. The resection bed consisted of the remnant left atrial appendage (LAA), the left PV antrum, and a 3-cm strip of LA floor connecting the left antrum to the remnant right antrum. Blue indicates remnant IAS. Red indicates the LAA. Green indicates the posterior LA wall surface and LA floor. Purple indicates the remnant right PV antrum. Orange indicates the left PV antrum. Yellow indicates the mitral valve.