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The cryoballoon catheter in the PLSVC. (A) Selective venography of the PLSVC in the anterior posterior projection. A ring catheter and 20-pole catheter are placed within the distal PLSVC. (B) The cryoballoon catheter is positioned at the level of the mid-PLSVC. We visualized the pooling of contrast agent at the successful ablation site.
PLSVC, persistent left superior vena cava.
