Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright view of the chest demonstrates low lung volumes . Small - to - moderate pleural effusions , right greater than left have decreaed in size since prior exam . There is persistent mild pulmonary edema , which has improved since ___ exam . Mediastinal wound VAC is in place . The superior mediastinal sutures appear fractured , unchanged . Heart size is moderately enlarged , stable . No pneumothorax .
    OUTPUT:
    
1 . In comparison to ___ exam , there is interval improvement in pulmonary edema , which is now mild . 2 . Small - to - moderate bilateral pleural effusions , right greater than left , slightly decreased in size since prior .