Key result
Radiofrequency ablation was successful in two patients with intracardiac tumors, demonstrating a close correspondence between the tumor site and the accessory pathway location.
Case Report (n=2)
Accessory pathways in patients with intracardiac tumors are closely related to the tumor and can be successfully targeted with radiofrequency ablation.
May support ablation of tumor-adjacent accessory pathways in select cases; hypothesis-generating and requires larger studies before practice change.
INTRODUCTION: There is a strong association of cardiac rhabdomyomas with the Wolff-Parkinson-White syndrome. This report describes the results of investigations in two patients with accessory pathway-mediated AV reciprocating tachycardia coexisting with intracardiac tumors. METHODS AND RESULTS: Two patients with intracardiac tumors had mapping of the accessory pathway. Echocardiograms obtained in the electrophysiology laboratory while the ablation catheter was at the site of successful radiofrequency ablation demonstrated a close correspondence between the site of intracardiac tumor and the location of the accessory pathway. CONCLUSIONS: These results lend support to the hypothesis that accessory pathways in patients with intracardiac tumors, such as rhabdomyomas, are not typical Kent bundles, but instead are either part of the intracardiac tumor or are closely related to the tumor. Ablation is possible in at least some patients with accessory pathways associated with intracardiac tumors.
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HARE et al. (1996) conducted a case report in Accessory pathway-mediated AV reciprocating tachycardia coexisting with intracardiac tumors (n=2). Electrophysiologic study and radiofrequency ablation was evaluated on Successful radiofrequency ablation and mapping of the accessory pathway. Radiofrequency ablation was successful in two patients with intracardiac tumors, demonstrating a close correspondence between the tumor site and the accessory pathway location.
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