Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . No prior . There is slight increased opacity identified at the right lung base medially , localizing to the lower lobe on the lateral exam . Elsewhere , lungs are clear . There is no effusion . The cardiomediastinal silhouette is within normal limits . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Subtle opacity at the right lung base medially , potentially atelectasis or pneumonia ; however , clinical correlation is suggested .