Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The inspiratory lung volumes are decreased from the prior study . The lungs are clear without focal consolidation , pleural effusion , or pneumothorax . The pulmonary vasculature is not engorged , and there is no overt pulmonary edema . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits . The trachea is midline . The visualized upper abdomen demonstrates no free air beneath the right hemidiaphragm . No displaced rib fractures are detected .
    OUTPUT:
    
No pneumothorax or displaced rib fractures .