CTICasesPulmonary Vein Stenosis and Focal Pulmonary Edema post-Ablation
Imaging findings
Chest CT demonstrates severe narrowing and attenuation of the left superior pulmonary vein following catheter ablation for atrial fibrillation, associated with localized ground-glass opacity and thickened interlobular septal lines in the corresponding lung segment.
Key takeaways
Pulmonary vein stenosis is a well-known iatrogenic complication of radiofrequency catheter ablation for atrial fibrillation. The resulting venous outflow obstruction can cause focal, wedge-shaped interstitial and alveolar pulmonary edema restricted to a single vascular territory, which can easily be misdiagnosed as focal pneumonia or infarction.
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