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 mildly enlarged but unchanged . The mediastinal and hilar contours are stable . There is crowding of the bronchovascular structures but no pulmonary edema is demonstrated . Minimal patchy bibasilar opacities may reflect atelectasis though infection is difficult to exclude . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities present .
    OUTPUT:
    
Low lung volumes . Patchy bibasilar opacities could reflect atelectasis but infection can not be completely excluded . Repeat PA and lateral views with improved inspiratory effort may be helpful for further assessment of the lung bases .