Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . There is no pneumothorax , fracture or dislocation . There is a focal opacity the right and base , more fully evaluated by subsequent CTA of the chest . Lung volumes are low , and lungs are otherwise clear . .
    OUTPUT:
    
Nonspecific right lower lobe opacity , more fully characterized on subsequent CTA of the chest , dictated separately .