Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires are noted , intact . Heart size is moderately enlarged , but stable . Pulmonary vascular congestion is mild . No frank interstitial edema . Bibasal opacities likely reflect a component of atelectasis . No convincing signs of pneumonia . No large pleural effusion . Osseous structures are intact .
    OUTPUT:
    
1 . Mild pulmonary vascular congestion without frank interstitial edema or pleural effusions . 2 . Moderate cardiomegaly .