Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . There is no overt pulmonary edema . The cardiac and mediastinal silhouettes are unremarkable . The hilar contours are stable . Multiple old left - sided rib fractures are again seen . Partially imaged is degenerative change at the left shoulder joint . Degenerative changes seen at the right acromioclavicular joint .
    OUTPUT:
    
No acute cardiopulmonary process .