Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been no significant change since the prior chest x-ray of ___ . The position of the PICC line is unchanged . The right lung remains clear . There is some loss of the left hemidiaphragm , slightly more marked than the prior occasion consistent with an effusion in this region . Elsewhere , the left lung appears clear .
    OUTPUT:
    
Little change since prior chest x-ray . Left effusion .