Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Due to an error in PACS , this study is being interpreted on ___ . Lung volumes are low . Heart size is normal . Aorta is tortuous and calcified . There is crowding of the bronchovascular structures . Patchy right basilar opacity could reflect atelectasis . No pleural effusion or pneumothorax is seen . Unusual lucency is seen within the mid mediastinum which does not persist on subsequent exam , of uncertain etiology .
    OUTPUT:
    
Low lung volumes with right basilar atelectasis .