<unk>  are extremely rare<unk>  that arise from the normal tissues that make up the<unk> . The incidence of<unk>  cardiac<unk>  has been found to be approximately 0.02%. This is in contrast to secondary<unk>  of the<unk> , which are typically either metastatic from another part of the body, or infiltrate the<unk>  via direct extension from the surrounding tissues. Metastatic<unk>  to the<unk>  are about 20 times more common than<unk>  cardiac<unk> .
Primary tumors of the heart
Ectopic pacemaker
Autoimmune heart disease
Ventricular aneurysm
Sudden arrhythmic death syndrome
Cardiac myxoma
Coronary artery ectasia
Pacemaker failure