Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: One portable AP view of the chest . Again seen is mild pulmonary edema , mostly on the right , with slight improvement compared to ___ . Right pleural thickening or loculated effusion is again seen and unchanged . There has been surgical removal of the right fourth rib posteriorly .
    OUTPUT:
    
1 . Persistent but improved mild pulmonary edema compared to prior study on ___ . 2 . Right pleural thickening or loculated effusion is stable . These findings were discussed with ___ at 2 : 30 pm on ___ by telephone .