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.Pulmonary vein stenosis is a rare but severe complication of catheter ablation for arterial fibrillation (AF). Symptoms include dyspnea, hemoptysis, recurrent pneumonia, and pulmonary hypertension. We herein discuss a 27-year-old male patient who presented with hemoptysis and dyspnea three months after catheter ablation for AF. Computed tomography demonstrated an occluded left inferior pulmonary vein (LIPV) and left lower lung edema secondary to severe stenosis of the LIPV. The patient underwent treatment, including drug-coated balloon