Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . There is persistent opacity at the left lateral costophrenic angle when compared to prior likely due to prominent fat pad . There is however new opacity in the posterior costophrenic angle which localizes to the right . Superiorly the lungs are clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities detected .
    OUTPUT:
    
Increased opacity projecting over the right lower lobe on the lateral view which could represent atelectasis although infection is also possible . Otherwise , no change .