Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Heart remains mildly enlarged . Mediastinal hilar contours are within normal limits . Pulmonary vasculature remains mildly engorged , but improved compared to the prior exam . No focal consolidation , pleural effusion or pneumothorax is seen . No acute osseous abnormality seen .
    OUTPUT:
    
Mild pulmonary vascular congestion , improved compared to the prior exam . No focal consolidation to suggest pneumonia .