Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is predominately linear opacity in the right mid and left lower lung which may represent atelectasis versus scarring . In the absence of prior studies , the possibility of a subtle pneumonia is difficult to exclude . No large effusion or pneumothorax is seen . No convincing signs of edema all for pulmonary vascular congestion . Cardiomediastinal silhouette appears within normal limits . The imaged bony structures are intact .
    OUTPUT:
    
Probable atelectasis versus scarring in the right mid and left lower lung . In the absence of prior imaging studies , difficult to exclude a subtle underlying pneumonia . Please correlate clinically .