Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate clear , well - expanded lungs . There is mild pulmonary vascular engorgement and chronic interstitial abnormality . The cardiac silhouette is moderately enlarged . The mediastinal contours are notable for changes of median sternotomy and AVR . There is no pleural effusion .
    OUTPUT:
    
Mild pulmonary vascular engorgement and moderate cardiomegaly .