Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . This causes accentuation of the cardiomediastinal silhouette which is likely at least borderline enlarged . There is crowding of the bronchovascular structures , without overt pulmonary edema . Assessment of the lung bases is limited due to the presence of low lung volumes , but there is at least bibasilar atelectasis . Chronic scarring within the right middle lobe is re - demonstrated . No focal consolidation , pleural effusion or pneumothorax is present . Osseous fragmentation of the distal right clavicle is compatible with remote trauma .
    OUTPUT:
    
Limited study due to low lung volumes . Bibasilar airspace opacities likely reflect atelectasis and scarring , although infection is difficult to exclude . Consider repeat PA and lateral radiographs with improved inspiratory effort for better assessment of the lung bases .