[Carditis in mononucleosis].

In this paper are described epidemiology, symptomatology and clinic without entering the variety of the possible appearances of the infectious mononucleosis. Through the affinity of the virus to parenchymatous organs the carditis mononucleosa develops. On the basis of 3 own observations the clinical pictures of pericarditis and myocarditis mononucleosa are described. A late immunological reaction with the development of autoantibodies is discussed as cause of myocarditis.