Pathological Findings of the Isthmus Between the Inferior Vena Cava and Tricuspid Annulus Ablated by Radiofrequency Application

Abstract
Anatomically guided radiofrequency ablation for the treatment of atrial flutter was performed in a 41‐year‐old man with interstitial pneumonia. He died of respiratory failure 2 months after ablation, and an autopsy was performed. The whole layer of the ablation site showed a transluminal fibrosis.