Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest compared to previous exam from ___ . There is subtle increased opacity projecting in the right mid lung , not significantly changed from prior . Somewhat linear opacity seen in the right lung base medially , likely within the lower lobe could be due to atelectasis . The lungs are otherwise clear . Biapical scarring again noted . Cardiomediastinal silhouette is stable as are the osseous and soft tissue structures .
    OUTPUT:
    
Subtle increased opacity in the right lower lobe , potentially due to atelectasis ; however , developing infiltrate can not be excluded .