Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is had median sternotomy with AVR and MVR . The cardiac silhouette is severely enlarged and unchanged from ___ study . A single chamber pacemaker is seen with the lead terminating in the right ventricle . Vascular engorgement is limited to the hila . No focal consolidations , pleural effusions , or pulmonary edema are seen .
    OUTPUT:
    
Stable severe cardiomegaly without pulmonary edema and no evidence of pneumonia .