1. Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC) -- Information from Healthwise
These subtypes are: dilated, hypertrophic, restrictive and arrhythmogenic right ventricular dysplasia. Primary cardiomyopathy refers to cases where cardiomyopathy occurs by itself or for unknown reasons (idiopathic).
http://www.everettclinic.com/kbase/nord/nord1128.htm

2. Exercise-Related Syncope in the Young Athlete: Reassurance, Restriction or Referral? - November 1...
Although not uncommon in athletes, electrocardiographic evidence of left ventricular hypertrophy or ventricular extrasystoles may represent subtle clues to hypertrophic cardiomyopathy or arrhythmogenic right ventricular dysplasia, respectively.
http://www.aafp.org/afp/991101ap/2001.html

3. ACC/AHA Guidelines for Implantation of Cardiac Pacemakers and Antiarrhythmia Devices: Executive S...
right ventricular dysplasia, idiopathic VF, and syncope with inducible. A simplified technique for implantation of left ventricular epicardial leads for biventricular resynchronisation using video-assisted thoracoscopy (VATS) Eur.
http://circ.ahajournals.org/cgi/content/full/97/13/1325