Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . Lung volumes are low which accentuates bronchovascular markings . Given that there are prominent interstitial markings bilaterally as well as bibasilar opacities , right greater than left which could represent atelectasis or infection in the appropriate clinical setting . There may be a small right pleural effusion .
    OUTPUT:
    
Low lung volumes . New bibasilar atelectasis , infection or aspiration . . Possible tiny right effusion . Mild pulmonary edema is difficult to exclude given very low lung volumes .