Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild cardiomegaly . The hilar and mediastinal contours are unremarkable . Note is made of mild interstitial thickening likely secondary to mild pulmonary edema , however this is overall improved compared to the prior exam . There is no pleural effusion or pneumothorax . No focal consolidations concerning for pneumonia are identified .
    OUTPUT:
    
Interval improvement of mild interstitial thickening likely secondary to mild pulmonary edema . No focal consolidations concerning for pneumonia identified . No pleural effusion .