Abstract
Pulmonary vein (PV) stenosis is a rare but serious complication after transcatheter ablation for atrial fibrillation, potentially leading to massive haemoptysis. We present a case of severe PV stenosis resulting in haemoptysis. A 57-year-old man presented with haemoptysis 18 months after catheter ablation. His left PV was almost completely occluded and required the left pneumonectomy. Pathological examination revealed irreversible fibrosis of the PV intima, which led to pulmonary congestion. Surgical intervention resolved the haemoptysis. Anatomical pulmonary resection is required for massive haemoptysis caused by PV stenosis that occurs long after transcatheter ablation.