Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right internal jugular line ends at lower SVC . Both lung volumes remain low . Sternal Fixation device as and sternal sutures are seen . Mild - to - moderate pulmonary edema has improved since ___ . Presumed small bilateral pleural effusions are stable . Top normal heart size , mediastinal and hilar contours are unchanged . There is no evidence of pneumothorax .
    OUTPUT:
    
Mild - to - moderate pulmonary edema has improved since ___ .