Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small areas of scarring or linear atelectasis persist in the lower lungs . However , the density overlying the right lower lung appears slightly increased in comparison to the prior studies and may be representative of a developing pneumonia in a proper clinical setting . Otherwise , the cardiac silhouette appears unchanged and within normal limits . Osseous structures are grossly unremarkable .
    OUTPUT:
    
Bibasilar areas of linear atelectasis / scarring are again noted . However , opacity overlying the right lower lung appears slightly increased in comparison to prior study and a developing pneumonia must be excluded in the proper clinical setting .