Pathogenesis of Arrhythmias Associated with Metastatic Tumors of the Heart

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Abstract
THE clinical bases of ante-mortem diagnosis of tumors of the heart are discussed in several excellent reviews.1 2 3 That such a diagnosis is sometimes of more than academic significance is proved by increasingly frequent reports of successful surgical removal of certain cardiac tumors.4 5 6 One of the clinical bases for diagnosis of a cardiac tumor is the occurrence of otherwise unexplained arrhythmias that are refractory to usual therapy and vary in type. If these events occur in a patient known to have a primary malignant lesion, the likelihood of cardiac metastasis increases. This is especially true of tumors that are known to . . .