Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . No focal consolidation , pleural effusion , or pneumothorax is seen . The heart is moderately enlarged but stable . Hilar contours are enlarged , possibly secondary to underlying pulmonary hypertension , but there is no pulmonary edema . A left chest pacemaker has leads in the appropriate positions in the right atrium and right ventricle .
    OUTPUT:
    
Stable moderate cardiomegaly without pulmonary edema . No focal consolidations or pleural effusions .