Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior exam , there is little change in the appearance of the chest . There is bibasilar atelectasis . There is no new opacity to suggest pneumonia . There is no pulmonary edema , pleural effusion , or pneumothorax . Enlargement of the cardiomediastinal silhouette is stable . Since the prior exam , there is a suggestion of new free intraperitoneal air below the left hemidiaphragm .
    OUTPUT:
    
1 . Possible new free intraperitoneal air . Recommend clinical correlation and evaluation with a chest PA and lateral radiograph or a CT of the abdomen . 2 . No evidence of pneumonia .