Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . There is new faint somewhat linear opacity in the right upper lung new since prior . Elsewhere , the lungs are clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities detected .
    OUTPUT:
    
Faint somewhat linear opacity in the right upper lung potentially atelectasis although infection is not totally excluded .