Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no new focal consolidation or pneumothorax . There has been improved aeration of the left lung base since ___ . Slight blunting of the right costophrenic angle is likely due to a small pleural effusion . Bibasilar atelectasis with scarring in the right middle lobe is unchanged since ___ . Coarse right breast calcifications are redemonstrated . Cardiomediastinal silhouette is unchanged . Lungs remain hyperinflated . Osseous structures are unremarkable except for degenerative changes in the thoracic spine .
    OUTPUT:
    
Small right pleural effusion . Unchanged right middle lobe scarring and bronchiectasis and mild bibasilar atelectasis .