Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest . The lungs are well expanded . There is mild pulmonary vascular congestion , improved from prior exam . Mild interstitial abnormality is again noted , unchanged from prior exam . Moderate to severe cardiomegaly is seen . No pleural effusion or pneumothorax is detected . Spine changes consistent with renal osteodystrophy are noted .
    OUTPUT:
    
1 . Mild pulmonary vascular congestion , improved from prior exam . 2 . Moderate to severe cardiomegaly .