Two important morphological features characterize ARVC/D: (a) progressive loss of myocardium, mainly in the right ventricle (RV), with fibrofatty replacement and (b) presence of patchy inflammatory infiltrates .
1. Fibrofatty replacement of myocardium. Morphologic alterations in patients with ARVC/D usually begin in the subepicardium or mediomural layers of the RV and progress to af
Table 9.1 • Inflammatory infiltrate in ARVC/D
Author No of Myocarditis patients %
Fontaine et al.,1990  27 74
Total 122 69
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