We performed cryoballoon ablation on a 61-year-old female patient with recurrent paroxysmal atrial fibrillation. Pre-procedural contrast-enhanced computed tomography (CT) angiography, used to assess the patient's pulmonary vein anatomy, revealed an accessory pulmonary vein originating from the left atrial roof. Cryoballoon ablation was successfully applied to this accessory vein, which represents a rare anatomical variant not commonly described in the literature.
Keywords: Accessory pulmonary vein, cryoballoon ablation, computed tomography