Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . Within the limitations of technique , the cardiac , mediastinal and hilar contours are probably within normal limits . There is no definite pleural effusion or pneumothorax . Heterogeneous opacification involves each mid lung , greater on the right than left , with areas of entirely spared lung . There is no clear finding to suggest an abnormal vasculature .
    OUTPUT:
    
Findings suggesting pneumonia .