id author title date pages extension mime words sentences flesch summary cache txt cord-018430-u3k8pds6 Mason, Jay W. Myocarditis 2007 .txt text/plain 21734 1351 34 The classification states that "myocarditis is diagnosed by established histological, immunological and immunohistochemical criteria." The Dallas criteria 5 provide consensus-derived histologic criteria: "an inflammatory infiltrate of the myocardium with necrosis and/or degeneration of adjacent myocytes not typical of ischemic damage associated with coronary artery disease." However, many have speculated that less pronounced histologic abnormalities may be present and that additional molecular, immunologic, and immunohistochemical diagnostic criteria can be used productively. 330 These criteria define active myocarditis (see also Fig. 59 .7A) as "an inflammatory infiltrate of the myocardium with necrosis and/or degeneration of adjacent myocytes not typical of ischemic damage associated with coronary artery disease." Furthermore, other causes of inflammation (e.g., connective tissue disorders, infection, drugs) should be excluded. 392 An interesting hypothesis to explain the high frequency of dilated heart muscle disease is the presence of myocarditis in HIV-infected patients with left ventricular dysfunction. The ECG abnormalities suggesting myocardial involvement are present in a high proportion of patients, 414 but clinical evidence of cardiac dysfunction occurs in only 10% to 25% of cases. ./cache/cord-018430-u3k8pds6.txt ./txt/cord-018430-u3k8pds6.txt