Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior study , there has been no significant interval change . The lungs remain well - expanded , and relatively clear . There is no large pleural effusion , overt pulmonary edema , or focal consolidation worrisome for pneumonia . No pneumothorax is present . The cardiomediastinal silhouette is stable .
    OUTPUT:
    
No significant interval change in appearance of the chest since the prior study obtained less than 1 hr ago .