Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Patchy bibasilar opacities are noted . No pleural effusion . Severe degenerative change at the right glenohumeral joint . No displaced rib fracture is seen , but exam is limited by low lung volumes and AP technique . .
    OUTPUT:
    
1 . Patchy bibasilar opacities may represent aspiration , atelectasis or pneumonia . 2 . No evidence of acute , displaced rib fracture or pneumothorax . 3 . Severe degenerative change at the right glenohumeral joint , unchanged .