Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lingular opacity demonstrated on the prior study is not as well seen on the current study and may have been due to atelectasis . No definite focal consolidation is seen . Mid lung linear atelectasis / scarring is seen . . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Lingular opacity demonstrated on the prior study is not as well seen on the current study and may have been due to atelectasis . No definite focal consolidation is seen