Second most common cause of sudden cardiac death in young patients 
Up to 20% of sudden cardiac deaths in young people
Usually occurs in people of Greek or Italian descent
Male:Female = 3:1
1:1000-10,000 in the US
Fibro-fatty replacement of<unk><unk>  myocardium
Two forms:
Autosomal dominant
Variable penetrance
Autosomal recessive
Naxos disease (Palmoplantar keratoderma) 
Up to 20% of sudden cardiac deaths in young people
Autosomal dominant
Variable penetrance
Autosomal recessive
Naxos disease (Palmoplantar keratoderma) 
Variable penetrance
Naxos disease (Palmoplantar keratoderma)
Arrhythmogenic right ventricular dysplasia
Dilated cardiomyopathy
Stone heart
Hypertrophic cardiomyopathy
Hypoplastic left heart syndrome
Restrictive cardiomyopathy
Peripartum cardiomyopathy
Total anomalous pulmonary venous return