Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest show slightly smaller lung volumes than seen on the prior study from ___ . Linear perihilar atelectasis noted in the right upper lobe with no consolidation seen suggesting pneumonia . Heart and mediastinal structures and bony structures show no significant interval change .
    OUTPUT:
    
No pneumonia seen to account for leukocytosis .