Radiofrequency ablation of metastatic chondrosarcoma-associated refractory ventricular tachycardia originating from the right ventricular outflow tract: A case report and literature review

Abstract

Abstract. Ventricular tachycardia (VT) and premature contraction originating from the right ventricular outflow tract (RVOT) usually appear in healthy individuals. Radiofrequency ablation (RFA) is highly effective at resolving this type of arrhythmia. Refractory VT of RVOT is uncommon and occasionally results from cardiac metastasis of extraskeletal mesenchymal chondrosarcomas (ESMC). ESMC is a rare malignant tumor arising from soft tissues. The current study presents the case of a 25-year-old male with severe VT arising from RVOT due to metastasis of an ESMC that originally occurred in the retroperitoneum. The diagnosis was confirmed following echocardiography and cardiac magnetic resonance. VT was eventually eliminated by RFA, and during the 8-month follow-up period the patient did not complain of any palpitations. Holter monitoring confirmed the absence of recurrence.

Refractory Ventricular Tachycardia Originating From an Intracardiac Metastasis Treated With Catheter Ablation

“…( 2 ) described a metastatic melanoma–associated PMVT that was successfully treated with antiarrhythmic agents and defibrillator implant. Only 2 reports of catheter ablation for intracardiac tumor associated with monomorphic VT have been described, where the earliest activation was localized on the tumor surface and RF successfully terminated the arrhythmia ( 3 , 4 ).…”