Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is lucency under the right hemidiaphragm . Stool is again seen in this region and it is unclear if this is within a distended loop of colon or if it is indeed free air .CT scan would be needed for clarification . the appearance of the lungs are unchanged .
    OUTPUT:
    
Lucency under the right hemidiaphragm still concerning for free air versus chilaiditi .