Abstract
Myocarditis is a non-ischemic inflammatory disease of the myocardium associated with cardiac dysfunction. It most often results from infectious agents, hypersensitivity responses, or immune-related injury. In spite of the development of various diagnostic modalities, early and definite diagnosis of myocarditis still depends on the detection of inflammatory infiltrates in endomyocardial biopsy specimens according to Dallas criteria. Routine application of immunohistochemistry (for characterization of inflammatory cell infiltration) and Polymerase Chain Reaction PCR analysis (for identification of infective agents) has become an essential part of the diagnostic armamentarium for a more precise biopsy report. A new morphological classification is advanced to overcome the limits of Dallas criteria. A semiquantitative assessment of myocyte damage/inflammation (grading) as well as of fibrosis (staging) is indicated, thus providing histopathological diagnosis useful to the clinician for more appropriate patient risk stratification and for the application of new therapies. Consequently, the final diagnosis of myocarditis should be mainly based on three features: etiology, grade, and stage of the disease.
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Calabrese, F., Angelini, A., Carturan, E., Thiene, G. (2006). Myocarditis and Inflammatory Cardiomyopathy: Histomorphological Diagnosis. In: Schultheiss, H.P., Kapp, J.F., Grötzbach, G. (eds) Chronic Viral and Inflammatory Cardiomyopathy. Ernst Schering Research Foundation Workshop, vol 55. Springer, Berlin, Heidelberg . https://doi.org/10.1007/3-540-30822-9_17
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DOI: https://doi.org/10.1007/3-540-30822-9_17
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