Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Aortic knob calcification is re - demonstrated . Mediastinal and hilar contours are normal . Lungs are clear . Pulmonary vasculature is not engorged . No pleural effusion , focal consolidation or pneumothorax is present . Marked degenerative changes are noted involving both glenohumeral joints .
    OUTPUT:
    
No acute cardiopulmonary abnormality .