Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . No focal consolidation , pleural effusion , pneumothorax . However , there is increased vague opacification at the lung bases . There is minimal perihilar atelectasis . Heart and mediastinal contours are within normal limits .
    OUTPUT:
    
Subtle opacification at the lung bases , which may represent atypical pneumonia or dependent edema . This finding was discussed with Dr . ___ by Dr . ___ by phone at 9 :08 a .m . on ___ .