Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . The hilar and cardiomediastinal contours are normal . There is no pneumothorax . There is no pleural effusion . Pulmonary vascularity is normal . A hypoplastic right first rib is again noted . There are severe degenerative changes of the bilateral glenohumeral and acromioclavicular joints .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .