Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is redemonstration of low lung volumes which accentuate the bronchovascular structures . Increased opacities at the lung bases bilaterally are likely secondary to atelectasis . There is no focal consolidation , pleural effusion or pneumothorax . There is mild prominence of the pulmonary vasculature with no overt pulmonary edema . The cardiomediastinal and hilar contours are within normal limits .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis . Mild prominence of the pulmonary vasculature with no overt pulmonary edema .