Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mildly enlarged but unchanged . The mediastinal contour is similar . Mild pulmonary vascular congestion is demonstrated . Lungs are hyperinflated . Blunting of the costophrenic angles posteriorly suggests trace bilateral pleural effusions . Patchy opacities in lung bases may reflect atelectasis . No pneumothorax is identified . There is diffuse demineralization of the osseous structures of multilevel severe degenerative changes . Compression deformity of a low thoracic vertebral body , similar to the previous examinations . Extensive degenerative changes of the left glenohumeral joint is again noted . There appears to be chronic inferior subluxation of the right shoulder .
    OUTPUT:
    
Mild pulmonary vascular congestion with trace bilateral pleural effusions . Patchy opacities in lung bases may reflect atelectasis , but early infection or aspiration can not be completely excluded .