Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Comparison is made to previous exam from ___ and abdominal CT from the same day . Linear opacities again seen in the mid lungs bilaterally , less significant compared to prior and suggestive of atelectasis . There is minimal retrocardiac patchy opacity as seen on CT scan from earlier the same day . There is no large confluent consolidation or effusion . Cardiomediastinal silhouette is within normal limits . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Minimal patchy opacity in the left lower lobe , better appreciated on CT scan and may represent infection in the proper clinical setting .