Atrial fibrillation triggered by pulmonary vein involvement in recurrent lymphoma: successful treatment with pulsed field ablation—a case report

This case illustrates a rare presentation of AF associated with recurrent lymphoma involving the RIPV. Although AF termination after RIPV isolation suggests a pulmonary vein-mediated mechanism, local tumour involvement may have facilitated AF initiation from the RIPV by increasing its arrhythmogenic potential. Multimodal imaging and intracardiac cytology enabled diagnosis without biopsy, while PFA provided safe and effective rhythm control in a structurally compromised region.