because two of five patients had sarcoidosis diagnosed on gross examination , a negative endomyocardial biopsy does not exclude the diagnosis of myocardial sarcoidosis , which should therefore be pursued in the setting of unexplained heart failure , conduction abnormalities , and ventricular arrhythmia , particularly when right ventricular end-diastolic pressure is raised .
C0189785
endomyocardial biopsy
C0027061
myocardial