CTICasesCryoablation-Induced Pulmonary Vein Stenosis
Imaging findings
CT angiography post-AF cryoablation shows complete occlusion of the left inferior pulmonary vein with chronic thrombosis, severe stenosis and calcification of the left superior pulmonary vein, and secondary eccentric in-situ thrombosis of the left lower lobe pulmonary artery due to sluggish flow.
Key takeaways
Pulmonary vein stenosis is a well-known complication of catheter ablation (radiofrequency or cryoablation) for atrial fibrillation. Downstream vascular stasis can lead to localized parenchymal congestion, infarction, and in-situ pulmonary artery thrombosis.
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