Morphological considerations of peri- and myocarditis

In medicine, and thus in pathology, there are areas/topics of fashion and they shift from time to time. Pericardial diseases are not fashionable. Myocarditis is, and has been for a long time. Due to new ways of retrieving tissue samples from the pericardium the modern diagnostic tools such as immunohistochemistry and molecular pathology can be applied in this context as they have been in myocarditis for a long period. The diagnosis of inflammation rests on many other findings than morphological alterations and it is indeed questionable if inflammation is solely a morphological diagnosis. The methodologies of pathology can be improved and used in a better and more purposeful way even under routine conditions. It is concluded that morphology is still mandatory to make a final diagnosis of peri- and myocarditis.