Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky right lower lobe atelectasis / scarring is re - demonstrated , with slight improvement in aeration of the right lung base . There is also minor left base atelectasis / scarring . No definite new focal consolidation is seen . Persistent blunting of the right costophrenic angle is seen , which may be due to a small pleural effusion . There is no left pleural effusion . No pneumothorax is seen . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Chronic streaky right greater than left bibasilar atelectasis / scarring . No definite new focal consolidation . Small right pleural effusion .