Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . This causes the heart size to be accentuated , appearing mildly enlarged . Mild atherosclerotic calcifications of the aortic arch are present . There is crowding of bronchovascular structures , but no overt pulmonary edema is noted . Assessment of the lung bases is limited due to low lung volumes . Mild atelectasis is seen at the lung bases , but infection can not be excluded . No pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes limit assessment of the lung bases . Streaky bibasilar opacities likely reflect atelectasis although infection can not be excluded . Consider repeat PA and lateral views with improved inspiratory effort once the patient is able to better assess the lung bases .