Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval increase in lung volumes with minimal left basilar atelectasis . Mild chronic abnormality at the base of either right or left lung best seen on lateral view could represent scarring or bronchiectasis and has been stable since ___ . No pleural effusion , pneumothorax or pulmonary edema . Heart size , mediastinal contour and hila are normal . No bony abnormality .
    OUTPUT:
    
1 . Interval improvement in lung volumes with residual minimal left basilar atelectasis . 2 . Mild chronic abnormality at left lung base could be scarring or bronchiectasis and has been stable since ___ .