[Hypersensitivity myocarditis, a surprising diagnosis. Case report].

Hypersensitivity myocarditis is a rare morphoclinical entity that may cause sudden death through arrhythmia and cardiogenic shock. The focus of the paper is the histological evaluation of the cases to identify the death cause of a 50-year-old patient, known to have suffered of hypertrophic cardiomyopathy, infective endocarditis and severe mitral regurgitation, case in which hypersensitivity myocarditis precipitated the evolution of the disease. The basis of the study was a complete cardiac evaluation including the morphological diagnosis on necropsy specimens. The paper shows that hypersensitivity myocarditis is a cause of sudden death through acute cardiac failure, and the setting of a precise morphological diagnosis is very important for an early targeted treatment.