Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . This accentuates the size of the cardiac silhouette which is top normal . The mediastinal contours are unremarkable . There is crowding of the bronchovascular structures . Patchy bibasilar airspace opacities could reflect atelectasis though infection is not excluded . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes limit assessment of the lung bases . Patchy bibasilar airspace opacities could reflect atelectasis but infection can not be excluded . Consider repeat PA and lateral views with improved inspiratory effort for further assessment .