Infectious mononucleosis complicated by myocarditis and pericarditis.
D000293:Adolescent; D004796:Clinical Enzyme Tests; D003937:Diagnosis, Differential; D006801:Humans; D007244:Infectious Mononucleosis / Q000150:complications*; D008297:Male; D009205:Myocarditis / Q000175:diagnosis / Q000209:etiology*; D010493:Pericarditis / Q000209:etiology*