Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Redemonstrated is a large , somewhat ill - defined , heterogeneous and rounded opacity within the right mid lung . Furthermore , there is apparent tethering of the lesion , which may suggest underlying spiculation . Linear opacities within the left lower lobe and retrocardiac region have increased as compared to the prior examination , suggestive of worsening atelectasis . The upper lung zones are clear . There is no significant pleural effusion or pneumothorax identified . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
1 . Large , rounded lesion in the right mid lung , demonstrating potential tethering to the adjacent structures . Recommend cross - sectional imaging for further lesion characterization . 2 . Worsening left basilar and retrocardiac linear opacities , suggestive of atelectasis although underlying aspiration / infection can not be excluded .