Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low - normal and slightly exaggerate heart size , which is likely mildly enlarged . There is no focal consolidation , effusion or pneumothorax . There is no central vascular congestion or overt pulmonary edema . Minimal bibasilar atelectasis . Pleural calcification along the left hemidiaphragm is unchanged . There is mild unfolding of the thoracic aorta with mild calcification at the aortic knob .
    OUTPUT:
    
1 . No acute intrathoracic process . 2 . Minimal bibasilar atelectasis .