Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is rotated to the left on the frontal view . There is increased opacity at the right lung base callosal more conspicuous when compared to previous exam . There is no correlate of abnormality on the lateral view . There is no effusion in the left lung is clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Increased opacity at the right lung base only on the frontal ony view could be due to atelectasis although infection is not entirely excluded .