Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are low in volume and show a left perihilar opacity with mild bronchial wall thickening . The cardiac silhouette is mildly enlarged . The mediastinal silhouette and pleural surfaces are normal . There is a small left pleural effusion .
    OUTPUT:
    
Mild peribronchial cuffing with perihilar opacities secondary to mild pulmonary edema .