Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In the right middle lobe , there continues to be an opacity , similar to the earlier chest x-ray and likely atelectasis . The lungs are otherwise clear . The cardiomediastinal silhouette and hilar contours are unremarkable . There is persistent elevation of the right hemidiaphragm . Under the right diaphragm , there is an ir - fluid level seen ; question air / fluid collection vs free air vs possible transposition of the colon in front of the liver although this was not seen on prior studies . A Dobbhoff tube is once again seen with its tip in the stomach . There is blunting of the posterior left costophrenic angle and a small pleural effusion may be present .
    OUTPUT:
    
1 . Continued opacity in the right middle lobe , likely atelectasis . 2 . Air-fluid level under the right hemidiaphgram , question air / fluid collection vs transposition of the colon superior to liver ( although this was not seen on prior studies ) vs free air . CT scan pending . 3 . Blunting of the posterior left costophrenic angle , a small pleural effusion may be present .