At first presentation of right-ventricular outflow tract tachycardia it is often not possible to differentiate between IRVT and arrhythmogenic RV cardiomyopathy. The two being significantly different in prognosis and treatment, follow-up monitoring is essential to establish the definitive diagnosis.
The cardiac involvement of previously undiagnosed systemic sarcoidosis was the cause of sudden death. In case of ECG changes of unknown cause in persons without a history of structural cardiac disease sarcoidosis should be considered in the differential diagnosis.
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