Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs . The cardiac silhouette is mildly enlarged . Mildly increased focal opacity in the central right lower lung without correlate on the lateral view likely represents atelectasis , but an early pneumonia can not be excluded . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Mildly increased focal opacity in the central right lower lung likely represents atelectasis , but early pneumonia can not be excluded .