We report the findings in a patient with constrictive pericarditis who had ECGs resembling right ventricular hypertrophy without right ventricular pressure overload, and we provide a possible explanation for the cause of this abnormality. Right ventriculography demonstrated a dilated and hyperkinetic outflow tract and compressed free wall with calcified pericardium. The derangement of the configuration of the right ventricle was considered to be the genesis of this electrocardiographic abnormality.