Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are low in volume and show mild bilateral ground - glass opacity . The cardiac silhouette is enlarged . The mediastinal silhouette is normal . The hilar contours are enlarged as well .
    OUTPUT:
    
Mild pulmonary edema with pulmonary arterial enlargement , which could be related to pulmonary hypertension .