Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been previous median sternotomy and tricuspid valve replacement . Pacemaker remains in place , and cardiac silhouette remains markedly enlarged . However , there is no evidence of congestive heart failure . Previously present pleural effusions and adjacent basilar atelectasis have resolved .
    OUTPUT:
    
Cardiomegaly without evidence of congestive heart failure .