chronic pericarditis is divided into chronic pericardial effusion , the incidence of which is underestimated as it produces few or no symptoms , and chronic constrictive pericarditis , itself divided into 2 subgroups of different prognosis depending on the presence ( pure fibrous pericarditis ) or absence ( constrictive sero-fibrous pericarditis ) of underlying myocardial lesions .
C0031046
pericarditis
C0031048
constrictive