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A 72-year-old man with a history of paroxysmal symptomatic atrial fibrillation refractory to oral D, L-sotalol 320 mg/day was referred for cryoballoon pulmonary vein (PV) isolation. Cardiac CT angiography (CTA) was performed prior to the ablation procedure to evaluate the left atrium and the anatomy of the PV. The CTA revealed an unusual pulmonary venous anomaly consisting of a common ostium of the left …
Competing interests None.
Provenance and peer review Not commissioned; not externally peer reviewed.