Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are patchy regions of consolidation at the lung bases , particularly in the retrocardiac region . Superiorly , lungs are clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Bibasilar regions of consolidation , left greater than right . While some of this may be due to atelectasis given relatively low lung volumes , superimposed infection is suspected , particularly on the left .