Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Inspiratory volumes are low . Allowing for this , no definite cardiomediastinal enlargement . Upper zone redistribution is likely accentuated by low inspiratory volumes . Mild peribronchial thickening is noted adjacent to the left hilum . There is patchy opacity of both lung bases . No frank consolidation or gross effusion . No displaced rib fracture detected on these lung technique films . Mild multilevel degenerative changes noted in the visualized portion of the spine . AC joint degenerative changes noted bilaterally .
    OUTPUT:
    
Low inspiratory volumes . Patchy opacities at both lung bases . While this could represent atelectasis related to low inspiratory volumes , in the appropriate clinical setting , changes due to aspiration and early pneumonic infiltrates could have a similar appearance . Doubt overt CHF . No effusion . No displaced rib fracture detected on these lung technique films .