Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There is bilateral hilar prominence with upper vascular re-distribution and diffuse interstitial thickening , but no focal opacities . Heart size is mildly enlarged although AP views are not tailored for accurate assessment of cardiac size . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Findings compatible with mild pulmonary edema .