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Figure 6 Computed tomography scan depicting the relationship of the left atrium to adjacent structures. Note the course of the pulmonary artery (PA) along the roof of the left atrium (A) and of the left circumflex artery (LCX) close to the left atrial appendage (LAA) (B). LS = left superior pulmonary vein; roof = left atrial roof; RS = right superior pulmonary vein.
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