Myocarditis is defined by World Health Organization as an inflammatory disease affecting the myocardium, diagnosed by endomyocardial biopsy (EMB) using established histological, immunological, and immunohistochemical criteria [1,2,3,4]. Myocarditis can be caused by viral, bacterial and fungal infections, systemic diseases, autoimmune dysregulation, drugs and toxins [5]. When no infectious agents are identified on EMB and all other known causes are excluded, an autoimmune process is the presumed etiology [6].
