Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged , likely accentuated due to low lung volumes . The aorta is tortuous and demonstrates diffuse atherosclerotic calcifications . Crowding of the bronchovascular structures is present , with probable mild pulmonary vascular congestion . Linear opacities in the lung bases likely reflect areas of atelectasis . A small right pleural effusion is likely present . No pneumothorax is identified . No acute osseous abnormality is detected .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis and probable mild pulmonary vascular congestion . Probable small right pleural effusion .