Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are low in volume and show a mild opacity in the right lower lobe which is unchanged since the CT from ___ and is associated with a moderate effusion . The cardiac silhouette is normal . The mediastinal silhouette is widened likely related to a tortuous aorta as evidenced on the CT from ___ . A right - sided pacer terminates with its leads in the right atrium and right ventricle . There is mild bilateral glenohumeral joint space narrowing . Mitral annular calcifications .
    OUTPUT:
    
Right lower lobe atelectasis with moderate effusion , unchanged from ___ .